shock marker

63
Suad Al-Sulimani R2

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Page 1: shock marker

Suad Al-Sulimani R2

Definition of shock in term of cellular function

Path physiology amp clinical finding of different types of shock

Biochemical shock markers Evidence based clinical values

bull Profound hemodynamic and metabolic disturbance characterized by failure of the circulatory system to maintain adequate perfusion of vital organs

Aerobic Metabolism

6 O2

GLUCOSE

METABOLISM

6 CO2

6 H2O

36 ATP

HEAT (417 kcal)

Anaerobic Metabolism

GLUCOSE METABOLISM

2 LACTIC ACID

2 ATP

HEAT (32 kcal)

InadequateInadequateCellularCellular

OxygenationOxygenation

InadequateInadequateCellularCellular

OxygenationOxygenation

AnaerobicAnaerobicMetabolismMetabolism

AnaerobicAnaerobicMetabolismMetabolism

MetabolicMetabolicFailureFailure

MetabolicMetabolicFailureFailure MetabolicMetabolic

AcidosisAcidosis

MetabolicMetabolicAcidosisAcidosis

InadequateInadequateEnergyEnergy

ProductionProduction

InadequateInadequateEnergyEnergy

ProductionProduction Lactic AcidLactic AcidProductionProduction

Lactic AcidLactic AcidProductionProduction

Cell DeathCell DeathCell DeathCell Death

Peripheral vasoconstrictionhellip

peripheral vascular peripheral vascular resistancehellipresistancehellip

peripheral vascular peripheral vascular resistancehellipresistancehellip

afterloadhellipafterloadhellip afterloadhellipafterloadhellip

blood pressureblood pressure blood pressureblood pressure

Peripheral vasodilationhellip

peripheral vascular peripheral vascular resistancehellipresistancehellip

peripheral vascular peripheral vascular resistancehellipresistancehellip

afterloadhellipafterloadhellip afterloadhellipafterloadhellip

blood pressureblood pressure blood pressureblood pressure

fluid volumehellip

preloadhellippreloadhellip preloadhellippreloadhellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

cardiac outputcardiac output cardiac outputcardiac output blood pressureblood pressure blood pressureblood pressure

fluid volumehellip

preloadhellippreloadhellip preloadhellippreloadhellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

cardiac outputcardiac output cardiac outputcardiac output blood pressureblood pressure blood pressureblood pressure

1048711 The human body responds to acutehemorrhage by activating 4 majorphysiologic systems the hematologicsystem the cardiovascular system therenal system and the neuroendocrinesystem

1048711 Platelets are activated which form an immatureclot on the bleeding source

1048711 The damaged vessel exposes collagen whichsubsequently causes fibrin deposition andstabilization of the clot

Hypovolemic Shock Cardiovascular System

1048711 Increases the heart rate increasing myocardialcontractility and constricting peripheral bloodvessels1048711 This response occurs secondary to an increase inrelease of norepinephrine and a decrease inbaseline vagal tone (regulated by thebaroreceptors in the carotid arch aortic arch leftatrium and pulmonary vessels)

1048711 The cardiovascular system also responds by redistributing blood to the brain heart and kidneys and away from skin muscle and GI tract

Hypovolemic Shock Renal System

1048711 The kidneys respond to hemorrhagicshock by stimulating an increase in renninsecretion from the juxtaglomerularapparatus

PlasmaPlasmavolumevolume

PlasmaPlasmavolumevolume

[Na+][Na+] [Na+][Na+]

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)Detected by

Releases

ReninReninReninRenin

AngiotensinogenAngiotensin IhellipAngiotensin IhellipAngiotensin IhellipAngiotensin Ihellip

Converts

ampOr

Via ACE(AngiotensinConvertingEnzyme)

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip vasoconstrictionvasoconstriction vasoconstrictionvasoconstriction PVRPVR PVRPVR

BPBP BPBP

thirstthirst thirstthirst

FluidFluidvolumevolume

FluidFluidvolumevolume

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

AdrenalAdrenalcortexcortex

AdrenalAdrenalcortexcortex

Releases

AldosteroneAldosteroneAldosteroneAldosteroneNa+Na+

reabsorptionreabsorption

Na+Na+reabsorptionreabsorption

COCO COCORASRASActivationActivation

RASRASActivationActivation

DyspneaDyspnea DyspneaDyspnea

OO22

supplysupply

OO22

supplysupply

VolumeVolumePreloadPreload

VolumeVolumePreloadPreload

SVRSVR SVRSVR

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedema

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedemaImpairedImpairedmyocardial functionmyocardial function

ImpairedImpairedmyocardial functionmyocardial function

MyocardialMyocardialOO22 demand demand

MyocardialMyocardialOO22 demand demand

CatecholamineCatecholamineReleaseRelease

CatecholamineCatecholamineReleaseRelease

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Vascular ToneVascular ToneVascular ToneVascular Tone

Massive VasodilationMassive VasodilationMassive VasodilationMassive Vasodilation

SVR amp PreloadSVR amp Preload SVR amp PreloadSVR amp Preload Cardiac OutputCardiac Output Cardiac OutputCardiac Output

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

Systemic Inflammatory Response Syndrome (SIRS) Systemic inflammatory response to a variety of severe clinical insults manifested by ge 2 of the following conditions Temperature gt38ordmC or lt36ordmC Heart rate gt90 beatsmin Respiratory rate gt20 breathsmin orPaCO2 lt32 torr (lt43 kPa) White blood cell count gt12000cellsmm3 lt4000 cellsmm3 or gt10immature (band) cells

Sepsis The presence of SIRS associated with a confirmed infectious process

Severe Sepsis Sepsis with either hypotension or systemic manifestations of hypoperfusionndash Lactic acidosis oliguria altered mental status

Septic Shock Sepsis with hypotension despite adequatefluid resuscitation associated with hypoperfusion abnormalities

bullHemodynamic AlterationsbullHyperdynamic State (ldquoWarm Shockrdquo)bullTachycardiabullElevated or normal cardiac outputbullDecreased systemic vascular resistance

bullHypodynamic State (ldquoCold Shockrdquo)bullLow cardiac output

Protein cactivation

bullCytokine production leads to massive production of endogenous vasodilators

bullStructural changes in the endothelium result in extravasation of intravascular fluid into interstitium and subsequent tissue edema

bullPlugging of select microvascular beds with neutrophils fibrin aggregates and microthrombi impair microvascular perfusion

bullOrgan-specific vasoconstriction

bullLoss of Sympathetic ResponsivenessbullDown-regulation of adrenergic receptor number and sensitivity possible altered signal transduction

bullVasodilatory Inflammatory MediatorsbullEndotoxin has direct vasodilatory

effectsbull Increased Nitric Oxide Production

Infection

InflammatoryMediators

Endothelial Dysfunction

Vasodilation

Hypotension Vasoconstriction Edema

Maldistribution of Microvascular Blood Flow

Organ Dysfunction

Microvascular Plugging

Ischemia

Cell Death

bullNormal compensation includesProgressive vasoconstriction Increased blood flow to major organs

Increased cardiac output Increased respiratory rate and volume

Decreased urine output

32

bull In shock the hydrostatic pressure decreases and the oncotic pressure is constant as a resultndash The fluid exchange from the capillary to the

extracellular space decreasesndash The fluid return from the extracellular space to

the capillary increasesThat will increase the blood volume which will

increase BP and will help to compensate shock situations

This system is known as the ldquoFluid shift systemrdquo

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 2: shock marker

Definition of shock in term of cellular function

Path physiology amp clinical finding of different types of shock

Biochemical shock markers Evidence based clinical values

bull Profound hemodynamic and metabolic disturbance characterized by failure of the circulatory system to maintain adequate perfusion of vital organs

Aerobic Metabolism

6 O2

GLUCOSE

METABOLISM

6 CO2

6 H2O

36 ATP

HEAT (417 kcal)

Anaerobic Metabolism

GLUCOSE METABOLISM

2 LACTIC ACID

2 ATP

HEAT (32 kcal)

InadequateInadequateCellularCellular

OxygenationOxygenation

InadequateInadequateCellularCellular

OxygenationOxygenation

AnaerobicAnaerobicMetabolismMetabolism

AnaerobicAnaerobicMetabolismMetabolism

MetabolicMetabolicFailureFailure

MetabolicMetabolicFailureFailure MetabolicMetabolic

AcidosisAcidosis

MetabolicMetabolicAcidosisAcidosis

InadequateInadequateEnergyEnergy

ProductionProduction

InadequateInadequateEnergyEnergy

ProductionProduction Lactic AcidLactic AcidProductionProduction

Lactic AcidLactic AcidProductionProduction

Cell DeathCell DeathCell DeathCell Death

Peripheral vasoconstrictionhellip

peripheral vascular peripheral vascular resistancehellipresistancehellip

peripheral vascular peripheral vascular resistancehellipresistancehellip

afterloadhellipafterloadhellip afterloadhellipafterloadhellip

blood pressureblood pressure blood pressureblood pressure

Peripheral vasodilationhellip

peripheral vascular peripheral vascular resistancehellipresistancehellip

peripheral vascular peripheral vascular resistancehellipresistancehellip

afterloadhellipafterloadhellip afterloadhellipafterloadhellip

blood pressureblood pressure blood pressureblood pressure

fluid volumehellip

preloadhellippreloadhellip preloadhellippreloadhellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

cardiac outputcardiac output cardiac outputcardiac output blood pressureblood pressure blood pressureblood pressure

fluid volumehellip

preloadhellippreloadhellip preloadhellippreloadhellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

cardiac outputcardiac output cardiac outputcardiac output blood pressureblood pressure blood pressureblood pressure

1048711 The human body responds to acutehemorrhage by activating 4 majorphysiologic systems the hematologicsystem the cardiovascular system therenal system and the neuroendocrinesystem

1048711 Platelets are activated which form an immatureclot on the bleeding source

1048711 The damaged vessel exposes collagen whichsubsequently causes fibrin deposition andstabilization of the clot

Hypovolemic Shock Cardiovascular System

1048711 Increases the heart rate increasing myocardialcontractility and constricting peripheral bloodvessels1048711 This response occurs secondary to an increase inrelease of norepinephrine and a decrease inbaseline vagal tone (regulated by thebaroreceptors in the carotid arch aortic arch leftatrium and pulmonary vessels)

1048711 The cardiovascular system also responds by redistributing blood to the brain heart and kidneys and away from skin muscle and GI tract

Hypovolemic Shock Renal System

1048711 The kidneys respond to hemorrhagicshock by stimulating an increase in renninsecretion from the juxtaglomerularapparatus

PlasmaPlasmavolumevolume

PlasmaPlasmavolumevolume

[Na+][Na+] [Na+][Na+]

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)Detected by

Releases

ReninReninReninRenin

AngiotensinogenAngiotensin IhellipAngiotensin IhellipAngiotensin IhellipAngiotensin Ihellip

Converts

ampOr

Via ACE(AngiotensinConvertingEnzyme)

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip vasoconstrictionvasoconstriction vasoconstrictionvasoconstriction PVRPVR PVRPVR

BPBP BPBP

thirstthirst thirstthirst

FluidFluidvolumevolume

FluidFluidvolumevolume

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

AdrenalAdrenalcortexcortex

AdrenalAdrenalcortexcortex

Releases

AldosteroneAldosteroneAldosteroneAldosteroneNa+Na+

reabsorptionreabsorption

Na+Na+reabsorptionreabsorption

COCO COCORASRASActivationActivation

RASRASActivationActivation

DyspneaDyspnea DyspneaDyspnea

OO22

supplysupply

OO22

supplysupply

VolumeVolumePreloadPreload

VolumeVolumePreloadPreload

SVRSVR SVRSVR

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedema

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedemaImpairedImpairedmyocardial functionmyocardial function

ImpairedImpairedmyocardial functionmyocardial function

MyocardialMyocardialOO22 demand demand

MyocardialMyocardialOO22 demand demand

CatecholamineCatecholamineReleaseRelease

CatecholamineCatecholamineReleaseRelease

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Vascular ToneVascular ToneVascular ToneVascular Tone

Massive VasodilationMassive VasodilationMassive VasodilationMassive Vasodilation

SVR amp PreloadSVR amp Preload SVR amp PreloadSVR amp Preload Cardiac OutputCardiac Output Cardiac OutputCardiac Output

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

Systemic Inflammatory Response Syndrome (SIRS) Systemic inflammatory response to a variety of severe clinical insults manifested by ge 2 of the following conditions Temperature gt38ordmC or lt36ordmC Heart rate gt90 beatsmin Respiratory rate gt20 breathsmin orPaCO2 lt32 torr (lt43 kPa) White blood cell count gt12000cellsmm3 lt4000 cellsmm3 or gt10immature (band) cells

Sepsis The presence of SIRS associated with a confirmed infectious process

Severe Sepsis Sepsis with either hypotension or systemic manifestations of hypoperfusionndash Lactic acidosis oliguria altered mental status

Septic Shock Sepsis with hypotension despite adequatefluid resuscitation associated with hypoperfusion abnormalities

bullHemodynamic AlterationsbullHyperdynamic State (ldquoWarm Shockrdquo)bullTachycardiabullElevated or normal cardiac outputbullDecreased systemic vascular resistance

bullHypodynamic State (ldquoCold Shockrdquo)bullLow cardiac output

Protein cactivation

bullCytokine production leads to massive production of endogenous vasodilators

bullStructural changes in the endothelium result in extravasation of intravascular fluid into interstitium and subsequent tissue edema

bullPlugging of select microvascular beds with neutrophils fibrin aggregates and microthrombi impair microvascular perfusion

bullOrgan-specific vasoconstriction

bullLoss of Sympathetic ResponsivenessbullDown-regulation of adrenergic receptor number and sensitivity possible altered signal transduction

bullVasodilatory Inflammatory MediatorsbullEndotoxin has direct vasodilatory

effectsbull Increased Nitric Oxide Production

Infection

InflammatoryMediators

Endothelial Dysfunction

Vasodilation

Hypotension Vasoconstriction Edema

Maldistribution of Microvascular Blood Flow

Organ Dysfunction

Microvascular Plugging

Ischemia

Cell Death

bullNormal compensation includesProgressive vasoconstriction Increased blood flow to major organs

Increased cardiac output Increased respiratory rate and volume

Decreased urine output

32

bull In shock the hydrostatic pressure decreases and the oncotic pressure is constant as a resultndash The fluid exchange from the capillary to the

extracellular space decreasesndash The fluid return from the extracellular space to

the capillary increasesThat will increase the blood volume which will

increase BP and will help to compensate shock situations

This system is known as the ldquoFluid shift systemrdquo

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 3: shock marker

bull Profound hemodynamic and metabolic disturbance characterized by failure of the circulatory system to maintain adequate perfusion of vital organs

Aerobic Metabolism

6 O2

GLUCOSE

METABOLISM

6 CO2

6 H2O

36 ATP

HEAT (417 kcal)

Anaerobic Metabolism

GLUCOSE METABOLISM

2 LACTIC ACID

2 ATP

HEAT (32 kcal)

InadequateInadequateCellularCellular

OxygenationOxygenation

InadequateInadequateCellularCellular

OxygenationOxygenation

AnaerobicAnaerobicMetabolismMetabolism

AnaerobicAnaerobicMetabolismMetabolism

MetabolicMetabolicFailureFailure

MetabolicMetabolicFailureFailure MetabolicMetabolic

AcidosisAcidosis

MetabolicMetabolicAcidosisAcidosis

InadequateInadequateEnergyEnergy

ProductionProduction

InadequateInadequateEnergyEnergy

ProductionProduction Lactic AcidLactic AcidProductionProduction

Lactic AcidLactic AcidProductionProduction

Cell DeathCell DeathCell DeathCell Death

Peripheral vasoconstrictionhellip

peripheral vascular peripheral vascular resistancehellipresistancehellip

peripheral vascular peripheral vascular resistancehellipresistancehellip

afterloadhellipafterloadhellip afterloadhellipafterloadhellip

blood pressureblood pressure blood pressureblood pressure

Peripheral vasodilationhellip

peripheral vascular peripheral vascular resistancehellipresistancehellip

peripheral vascular peripheral vascular resistancehellipresistancehellip

afterloadhellipafterloadhellip afterloadhellipafterloadhellip

blood pressureblood pressure blood pressureblood pressure

fluid volumehellip

preloadhellippreloadhellip preloadhellippreloadhellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

cardiac outputcardiac output cardiac outputcardiac output blood pressureblood pressure blood pressureblood pressure

fluid volumehellip

preloadhellippreloadhellip preloadhellippreloadhellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

cardiac outputcardiac output cardiac outputcardiac output blood pressureblood pressure blood pressureblood pressure

1048711 The human body responds to acutehemorrhage by activating 4 majorphysiologic systems the hematologicsystem the cardiovascular system therenal system and the neuroendocrinesystem

1048711 Platelets are activated which form an immatureclot on the bleeding source

1048711 The damaged vessel exposes collagen whichsubsequently causes fibrin deposition andstabilization of the clot

Hypovolemic Shock Cardiovascular System

1048711 Increases the heart rate increasing myocardialcontractility and constricting peripheral bloodvessels1048711 This response occurs secondary to an increase inrelease of norepinephrine and a decrease inbaseline vagal tone (regulated by thebaroreceptors in the carotid arch aortic arch leftatrium and pulmonary vessels)

1048711 The cardiovascular system also responds by redistributing blood to the brain heart and kidneys and away from skin muscle and GI tract

Hypovolemic Shock Renal System

1048711 The kidneys respond to hemorrhagicshock by stimulating an increase in renninsecretion from the juxtaglomerularapparatus

PlasmaPlasmavolumevolume

PlasmaPlasmavolumevolume

[Na+][Na+] [Na+][Na+]

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)Detected by

Releases

ReninReninReninRenin

AngiotensinogenAngiotensin IhellipAngiotensin IhellipAngiotensin IhellipAngiotensin Ihellip

Converts

ampOr

Via ACE(AngiotensinConvertingEnzyme)

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip vasoconstrictionvasoconstriction vasoconstrictionvasoconstriction PVRPVR PVRPVR

BPBP BPBP

thirstthirst thirstthirst

FluidFluidvolumevolume

FluidFluidvolumevolume

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

AdrenalAdrenalcortexcortex

AdrenalAdrenalcortexcortex

Releases

AldosteroneAldosteroneAldosteroneAldosteroneNa+Na+

reabsorptionreabsorption

Na+Na+reabsorptionreabsorption

COCO COCORASRASActivationActivation

RASRASActivationActivation

DyspneaDyspnea DyspneaDyspnea

OO22

supplysupply

OO22

supplysupply

VolumeVolumePreloadPreload

VolumeVolumePreloadPreload

SVRSVR SVRSVR

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedema

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedemaImpairedImpairedmyocardial functionmyocardial function

ImpairedImpairedmyocardial functionmyocardial function

MyocardialMyocardialOO22 demand demand

MyocardialMyocardialOO22 demand demand

CatecholamineCatecholamineReleaseRelease

CatecholamineCatecholamineReleaseRelease

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Vascular ToneVascular ToneVascular ToneVascular Tone

Massive VasodilationMassive VasodilationMassive VasodilationMassive Vasodilation

SVR amp PreloadSVR amp Preload SVR amp PreloadSVR amp Preload Cardiac OutputCardiac Output Cardiac OutputCardiac Output

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

Systemic Inflammatory Response Syndrome (SIRS) Systemic inflammatory response to a variety of severe clinical insults manifested by ge 2 of the following conditions Temperature gt38ordmC or lt36ordmC Heart rate gt90 beatsmin Respiratory rate gt20 breathsmin orPaCO2 lt32 torr (lt43 kPa) White blood cell count gt12000cellsmm3 lt4000 cellsmm3 or gt10immature (band) cells

Sepsis The presence of SIRS associated with a confirmed infectious process

Severe Sepsis Sepsis with either hypotension or systemic manifestations of hypoperfusionndash Lactic acidosis oliguria altered mental status

Septic Shock Sepsis with hypotension despite adequatefluid resuscitation associated with hypoperfusion abnormalities

bullHemodynamic AlterationsbullHyperdynamic State (ldquoWarm Shockrdquo)bullTachycardiabullElevated or normal cardiac outputbullDecreased systemic vascular resistance

bullHypodynamic State (ldquoCold Shockrdquo)bullLow cardiac output

Protein cactivation

bullCytokine production leads to massive production of endogenous vasodilators

bullStructural changes in the endothelium result in extravasation of intravascular fluid into interstitium and subsequent tissue edema

bullPlugging of select microvascular beds with neutrophils fibrin aggregates and microthrombi impair microvascular perfusion

bullOrgan-specific vasoconstriction

bullLoss of Sympathetic ResponsivenessbullDown-regulation of adrenergic receptor number and sensitivity possible altered signal transduction

bullVasodilatory Inflammatory MediatorsbullEndotoxin has direct vasodilatory

effectsbull Increased Nitric Oxide Production

Infection

InflammatoryMediators

Endothelial Dysfunction

Vasodilation

Hypotension Vasoconstriction Edema

Maldistribution of Microvascular Blood Flow

Organ Dysfunction

Microvascular Plugging

Ischemia

Cell Death

bullNormal compensation includesProgressive vasoconstriction Increased blood flow to major organs

Increased cardiac output Increased respiratory rate and volume

Decreased urine output

32

bull In shock the hydrostatic pressure decreases and the oncotic pressure is constant as a resultndash The fluid exchange from the capillary to the

extracellular space decreasesndash The fluid return from the extracellular space to

the capillary increasesThat will increase the blood volume which will

increase BP and will help to compensate shock situations

This system is known as the ldquoFluid shift systemrdquo

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 4: shock marker

Aerobic Metabolism

6 O2

GLUCOSE

METABOLISM

6 CO2

6 H2O

36 ATP

HEAT (417 kcal)

Anaerobic Metabolism

GLUCOSE METABOLISM

2 LACTIC ACID

2 ATP

HEAT (32 kcal)

InadequateInadequateCellularCellular

OxygenationOxygenation

InadequateInadequateCellularCellular

OxygenationOxygenation

AnaerobicAnaerobicMetabolismMetabolism

AnaerobicAnaerobicMetabolismMetabolism

MetabolicMetabolicFailureFailure

MetabolicMetabolicFailureFailure MetabolicMetabolic

AcidosisAcidosis

MetabolicMetabolicAcidosisAcidosis

InadequateInadequateEnergyEnergy

ProductionProduction

InadequateInadequateEnergyEnergy

ProductionProduction Lactic AcidLactic AcidProductionProduction

Lactic AcidLactic AcidProductionProduction

Cell DeathCell DeathCell DeathCell Death

Peripheral vasoconstrictionhellip

peripheral vascular peripheral vascular resistancehellipresistancehellip

peripheral vascular peripheral vascular resistancehellipresistancehellip

afterloadhellipafterloadhellip afterloadhellipafterloadhellip

blood pressureblood pressure blood pressureblood pressure

Peripheral vasodilationhellip

peripheral vascular peripheral vascular resistancehellipresistancehellip

peripheral vascular peripheral vascular resistancehellipresistancehellip

afterloadhellipafterloadhellip afterloadhellipafterloadhellip

blood pressureblood pressure blood pressureblood pressure

fluid volumehellip

preloadhellippreloadhellip preloadhellippreloadhellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

cardiac outputcardiac output cardiac outputcardiac output blood pressureblood pressure blood pressureblood pressure

fluid volumehellip

preloadhellippreloadhellip preloadhellippreloadhellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

cardiac outputcardiac output cardiac outputcardiac output blood pressureblood pressure blood pressureblood pressure

1048711 The human body responds to acutehemorrhage by activating 4 majorphysiologic systems the hematologicsystem the cardiovascular system therenal system and the neuroendocrinesystem

1048711 Platelets are activated which form an immatureclot on the bleeding source

1048711 The damaged vessel exposes collagen whichsubsequently causes fibrin deposition andstabilization of the clot

Hypovolemic Shock Cardiovascular System

1048711 Increases the heart rate increasing myocardialcontractility and constricting peripheral bloodvessels1048711 This response occurs secondary to an increase inrelease of norepinephrine and a decrease inbaseline vagal tone (regulated by thebaroreceptors in the carotid arch aortic arch leftatrium and pulmonary vessels)

1048711 The cardiovascular system also responds by redistributing blood to the brain heart and kidneys and away from skin muscle and GI tract

Hypovolemic Shock Renal System

1048711 The kidneys respond to hemorrhagicshock by stimulating an increase in renninsecretion from the juxtaglomerularapparatus

PlasmaPlasmavolumevolume

PlasmaPlasmavolumevolume

[Na+][Na+] [Na+][Na+]

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)Detected by

Releases

ReninReninReninRenin

AngiotensinogenAngiotensin IhellipAngiotensin IhellipAngiotensin IhellipAngiotensin Ihellip

Converts

ampOr

Via ACE(AngiotensinConvertingEnzyme)

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip vasoconstrictionvasoconstriction vasoconstrictionvasoconstriction PVRPVR PVRPVR

BPBP BPBP

thirstthirst thirstthirst

FluidFluidvolumevolume

FluidFluidvolumevolume

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

AdrenalAdrenalcortexcortex

AdrenalAdrenalcortexcortex

Releases

AldosteroneAldosteroneAldosteroneAldosteroneNa+Na+

reabsorptionreabsorption

Na+Na+reabsorptionreabsorption

COCO COCORASRASActivationActivation

RASRASActivationActivation

DyspneaDyspnea DyspneaDyspnea

OO22

supplysupply

OO22

supplysupply

VolumeVolumePreloadPreload

VolumeVolumePreloadPreload

SVRSVR SVRSVR

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedema

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedemaImpairedImpairedmyocardial functionmyocardial function

ImpairedImpairedmyocardial functionmyocardial function

MyocardialMyocardialOO22 demand demand

MyocardialMyocardialOO22 demand demand

CatecholamineCatecholamineReleaseRelease

CatecholamineCatecholamineReleaseRelease

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Vascular ToneVascular ToneVascular ToneVascular Tone

Massive VasodilationMassive VasodilationMassive VasodilationMassive Vasodilation

SVR amp PreloadSVR amp Preload SVR amp PreloadSVR amp Preload Cardiac OutputCardiac Output Cardiac OutputCardiac Output

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

Systemic Inflammatory Response Syndrome (SIRS) Systemic inflammatory response to a variety of severe clinical insults manifested by ge 2 of the following conditions Temperature gt38ordmC or lt36ordmC Heart rate gt90 beatsmin Respiratory rate gt20 breathsmin orPaCO2 lt32 torr (lt43 kPa) White blood cell count gt12000cellsmm3 lt4000 cellsmm3 or gt10immature (band) cells

Sepsis The presence of SIRS associated with a confirmed infectious process

Severe Sepsis Sepsis with either hypotension or systemic manifestations of hypoperfusionndash Lactic acidosis oliguria altered mental status

Septic Shock Sepsis with hypotension despite adequatefluid resuscitation associated with hypoperfusion abnormalities

bullHemodynamic AlterationsbullHyperdynamic State (ldquoWarm Shockrdquo)bullTachycardiabullElevated or normal cardiac outputbullDecreased systemic vascular resistance

bullHypodynamic State (ldquoCold Shockrdquo)bullLow cardiac output

Protein cactivation

bullCytokine production leads to massive production of endogenous vasodilators

bullStructural changes in the endothelium result in extravasation of intravascular fluid into interstitium and subsequent tissue edema

bullPlugging of select microvascular beds with neutrophils fibrin aggregates and microthrombi impair microvascular perfusion

bullOrgan-specific vasoconstriction

bullLoss of Sympathetic ResponsivenessbullDown-regulation of adrenergic receptor number and sensitivity possible altered signal transduction

bullVasodilatory Inflammatory MediatorsbullEndotoxin has direct vasodilatory

effectsbull Increased Nitric Oxide Production

Infection

InflammatoryMediators

Endothelial Dysfunction

Vasodilation

Hypotension Vasoconstriction Edema

Maldistribution of Microvascular Blood Flow

Organ Dysfunction

Microvascular Plugging

Ischemia

Cell Death

bullNormal compensation includesProgressive vasoconstriction Increased blood flow to major organs

Increased cardiac output Increased respiratory rate and volume

Decreased urine output

32

bull In shock the hydrostatic pressure decreases and the oncotic pressure is constant as a resultndash The fluid exchange from the capillary to the

extracellular space decreasesndash The fluid return from the extracellular space to

the capillary increasesThat will increase the blood volume which will

increase BP and will help to compensate shock situations

This system is known as the ldquoFluid shift systemrdquo

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 5: shock marker

Anaerobic Metabolism

GLUCOSE METABOLISM

2 LACTIC ACID

2 ATP

HEAT (32 kcal)

InadequateInadequateCellularCellular

OxygenationOxygenation

InadequateInadequateCellularCellular

OxygenationOxygenation

AnaerobicAnaerobicMetabolismMetabolism

AnaerobicAnaerobicMetabolismMetabolism

MetabolicMetabolicFailureFailure

MetabolicMetabolicFailureFailure MetabolicMetabolic

AcidosisAcidosis

MetabolicMetabolicAcidosisAcidosis

InadequateInadequateEnergyEnergy

ProductionProduction

InadequateInadequateEnergyEnergy

ProductionProduction Lactic AcidLactic AcidProductionProduction

Lactic AcidLactic AcidProductionProduction

Cell DeathCell DeathCell DeathCell Death

Peripheral vasoconstrictionhellip

peripheral vascular peripheral vascular resistancehellipresistancehellip

peripheral vascular peripheral vascular resistancehellipresistancehellip

afterloadhellipafterloadhellip afterloadhellipafterloadhellip

blood pressureblood pressure blood pressureblood pressure

Peripheral vasodilationhellip

peripheral vascular peripheral vascular resistancehellipresistancehellip

peripheral vascular peripheral vascular resistancehellipresistancehellip

afterloadhellipafterloadhellip afterloadhellipafterloadhellip

blood pressureblood pressure blood pressureblood pressure

fluid volumehellip

preloadhellippreloadhellip preloadhellippreloadhellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

cardiac outputcardiac output cardiac outputcardiac output blood pressureblood pressure blood pressureblood pressure

fluid volumehellip

preloadhellippreloadhellip preloadhellippreloadhellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

cardiac outputcardiac output cardiac outputcardiac output blood pressureblood pressure blood pressureblood pressure

1048711 The human body responds to acutehemorrhage by activating 4 majorphysiologic systems the hematologicsystem the cardiovascular system therenal system and the neuroendocrinesystem

1048711 Platelets are activated which form an immatureclot on the bleeding source

1048711 The damaged vessel exposes collagen whichsubsequently causes fibrin deposition andstabilization of the clot

Hypovolemic Shock Cardiovascular System

1048711 Increases the heart rate increasing myocardialcontractility and constricting peripheral bloodvessels1048711 This response occurs secondary to an increase inrelease of norepinephrine and a decrease inbaseline vagal tone (regulated by thebaroreceptors in the carotid arch aortic arch leftatrium and pulmonary vessels)

1048711 The cardiovascular system also responds by redistributing blood to the brain heart and kidneys and away from skin muscle and GI tract

Hypovolemic Shock Renal System

1048711 The kidneys respond to hemorrhagicshock by stimulating an increase in renninsecretion from the juxtaglomerularapparatus

PlasmaPlasmavolumevolume

PlasmaPlasmavolumevolume

[Na+][Na+] [Na+][Na+]

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)Detected by

Releases

ReninReninReninRenin

AngiotensinogenAngiotensin IhellipAngiotensin IhellipAngiotensin IhellipAngiotensin Ihellip

Converts

ampOr

Via ACE(AngiotensinConvertingEnzyme)

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip vasoconstrictionvasoconstriction vasoconstrictionvasoconstriction PVRPVR PVRPVR

BPBP BPBP

thirstthirst thirstthirst

FluidFluidvolumevolume

FluidFluidvolumevolume

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

AdrenalAdrenalcortexcortex

AdrenalAdrenalcortexcortex

Releases

AldosteroneAldosteroneAldosteroneAldosteroneNa+Na+

reabsorptionreabsorption

Na+Na+reabsorptionreabsorption

COCO COCORASRASActivationActivation

RASRASActivationActivation

DyspneaDyspnea DyspneaDyspnea

OO22

supplysupply

OO22

supplysupply

VolumeVolumePreloadPreload

VolumeVolumePreloadPreload

SVRSVR SVRSVR

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedema

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedemaImpairedImpairedmyocardial functionmyocardial function

ImpairedImpairedmyocardial functionmyocardial function

MyocardialMyocardialOO22 demand demand

MyocardialMyocardialOO22 demand demand

CatecholamineCatecholamineReleaseRelease

CatecholamineCatecholamineReleaseRelease

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Vascular ToneVascular ToneVascular ToneVascular Tone

Massive VasodilationMassive VasodilationMassive VasodilationMassive Vasodilation

SVR amp PreloadSVR amp Preload SVR amp PreloadSVR amp Preload Cardiac OutputCardiac Output Cardiac OutputCardiac Output

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

Systemic Inflammatory Response Syndrome (SIRS) Systemic inflammatory response to a variety of severe clinical insults manifested by ge 2 of the following conditions Temperature gt38ordmC or lt36ordmC Heart rate gt90 beatsmin Respiratory rate gt20 breathsmin orPaCO2 lt32 torr (lt43 kPa) White blood cell count gt12000cellsmm3 lt4000 cellsmm3 or gt10immature (band) cells

Sepsis The presence of SIRS associated with a confirmed infectious process

Severe Sepsis Sepsis with either hypotension or systemic manifestations of hypoperfusionndash Lactic acidosis oliguria altered mental status

Septic Shock Sepsis with hypotension despite adequatefluid resuscitation associated with hypoperfusion abnormalities

bullHemodynamic AlterationsbullHyperdynamic State (ldquoWarm Shockrdquo)bullTachycardiabullElevated or normal cardiac outputbullDecreased systemic vascular resistance

bullHypodynamic State (ldquoCold Shockrdquo)bullLow cardiac output

Protein cactivation

bullCytokine production leads to massive production of endogenous vasodilators

bullStructural changes in the endothelium result in extravasation of intravascular fluid into interstitium and subsequent tissue edema

bullPlugging of select microvascular beds with neutrophils fibrin aggregates and microthrombi impair microvascular perfusion

bullOrgan-specific vasoconstriction

bullLoss of Sympathetic ResponsivenessbullDown-regulation of adrenergic receptor number and sensitivity possible altered signal transduction

bullVasodilatory Inflammatory MediatorsbullEndotoxin has direct vasodilatory

effectsbull Increased Nitric Oxide Production

Infection

InflammatoryMediators

Endothelial Dysfunction

Vasodilation

Hypotension Vasoconstriction Edema

Maldistribution of Microvascular Blood Flow

Organ Dysfunction

Microvascular Plugging

Ischemia

Cell Death

bullNormal compensation includesProgressive vasoconstriction Increased blood flow to major organs

Increased cardiac output Increased respiratory rate and volume

Decreased urine output

32

bull In shock the hydrostatic pressure decreases and the oncotic pressure is constant as a resultndash The fluid exchange from the capillary to the

extracellular space decreasesndash The fluid return from the extracellular space to

the capillary increasesThat will increase the blood volume which will

increase BP and will help to compensate shock situations

This system is known as the ldquoFluid shift systemrdquo

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 6: shock marker

InadequateInadequateCellularCellular

OxygenationOxygenation

InadequateInadequateCellularCellular

OxygenationOxygenation

AnaerobicAnaerobicMetabolismMetabolism

AnaerobicAnaerobicMetabolismMetabolism

MetabolicMetabolicFailureFailure

MetabolicMetabolicFailureFailure MetabolicMetabolic

AcidosisAcidosis

MetabolicMetabolicAcidosisAcidosis

InadequateInadequateEnergyEnergy

ProductionProduction

InadequateInadequateEnergyEnergy

ProductionProduction Lactic AcidLactic AcidProductionProduction

Lactic AcidLactic AcidProductionProduction

Cell DeathCell DeathCell DeathCell Death

Peripheral vasoconstrictionhellip

peripheral vascular peripheral vascular resistancehellipresistancehellip

peripheral vascular peripheral vascular resistancehellipresistancehellip

afterloadhellipafterloadhellip afterloadhellipafterloadhellip

blood pressureblood pressure blood pressureblood pressure

Peripheral vasodilationhellip

peripheral vascular peripheral vascular resistancehellipresistancehellip

peripheral vascular peripheral vascular resistancehellipresistancehellip

afterloadhellipafterloadhellip afterloadhellipafterloadhellip

blood pressureblood pressure blood pressureblood pressure

fluid volumehellip

preloadhellippreloadhellip preloadhellippreloadhellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

cardiac outputcardiac output cardiac outputcardiac output blood pressureblood pressure blood pressureblood pressure

fluid volumehellip

preloadhellippreloadhellip preloadhellippreloadhellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

cardiac outputcardiac output cardiac outputcardiac output blood pressureblood pressure blood pressureblood pressure

1048711 The human body responds to acutehemorrhage by activating 4 majorphysiologic systems the hematologicsystem the cardiovascular system therenal system and the neuroendocrinesystem

1048711 Platelets are activated which form an immatureclot on the bleeding source

1048711 The damaged vessel exposes collagen whichsubsequently causes fibrin deposition andstabilization of the clot

Hypovolemic Shock Cardiovascular System

1048711 Increases the heart rate increasing myocardialcontractility and constricting peripheral bloodvessels1048711 This response occurs secondary to an increase inrelease of norepinephrine and a decrease inbaseline vagal tone (regulated by thebaroreceptors in the carotid arch aortic arch leftatrium and pulmonary vessels)

1048711 The cardiovascular system also responds by redistributing blood to the brain heart and kidneys and away from skin muscle and GI tract

Hypovolemic Shock Renal System

1048711 The kidneys respond to hemorrhagicshock by stimulating an increase in renninsecretion from the juxtaglomerularapparatus

PlasmaPlasmavolumevolume

PlasmaPlasmavolumevolume

[Na+][Na+] [Na+][Na+]

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)Detected by

Releases

ReninReninReninRenin

AngiotensinogenAngiotensin IhellipAngiotensin IhellipAngiotensin IhellipAngiotensin Ihellip

Converts

ampOr

Via ACE(AngiotensinConvertingEnzyme)

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip vasoconstrictionvasoconstriction vasoconstrictionvasoconstriction PVRPVR PVRPVR

BPBP BPBP

thirstthirst thirstthirst

FluidFluidvolumevolume

FluidFluidvolumevolume

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

AdrenalAdrenalcortexcortex

AdrenalAdrenalcortexcortex

Releases

AldosteroneAldosteroneAldosteroneAldosteroneNa+Na+

reabsorptionreabsorption

Na+Na+reabsorptionreabsorption

COCO COCORASRASActivationActivation

RASRASActivationActivation

DyspneaDyspnea DyspneaDyspnea

OO22

supplysupply

OO22

supplysupply

VolumeVolumePreloadPreload

VolumeVolumePreloadPreload

SVRSVR SVRSVR

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedema

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedemaImpairedImpairedmyocardial functionmyocardial function

ImpairedImpairedmyocardial functionmyocardial function

MyocardialMyocardialOO22 demand demand

MyocardialMyocardialOO22 demand demand

CatecholamineCatecholamineReleaseRelease

CatecholamineCatecholamineReleaseRelease

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Vascular ToneVascular ToneVascular ToneVascular Tone

Massive VasodilationMassive VasodilationMassive VasodilationMassive Vasodilation

SVR amp PreloadSVR amp Preload SVR amp PreloadSVR amp Preload Cardiac OutputCardiac Output Cardiac OutputCardiac Output

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

Systemic Inflammatory Response Syndrome (SIRS) Systemic inflammatory response to a variety of severe clinical insults manifested by ge 2 of the following conditions Temperature gt38ordmC or lt36ordmC Heart rate gt90 beatsmin Respiratory rate gt20 breathsmin orPaCO2 lt32 torr (lt43 kPa) White blood cell count gt12000cellsmm3 lt4000 cellsmm3 or gt10immature (band) cells

Sepsis The presence of SIRS associated with a confirmed infectious process

Severe Sepsis Sepsis with either hypotension or systemic manifestations of hypoperfusionndash Lactic acidosis oliguria altered mental status

Septic Shock Sepsis with hypotension despite adequatefluid resuscitation associated with hypoperfusion abnormalities

bullHemodynamic AlterationsbullHyperdynamic State (ldquoWarm Shockrdquo)bullTachycardiabullElevated or normal cardiac outputbullDecreased systemic vascular resistance

bullHypodynamic State (ldquoCold Shockrdquo)bullLow cardiac output

Protein cactivation

bullCytokine production leads to massive production of endogenous vasodilators

bullStructural changes in the endothelium result in extravasation of intravascular fluid into interstitium and subsequent tissue edema

bullPlugging of select microvascular beds with neutrophils fibrin aggregates and microthrombi impair microvascular perfusion

bullOrgan-specific vasoconstriction

bullLoss of Sympathetic ResponsivenessbullDown-regulation of adrenergic receptor number and sensitivity possible altered signal transduction

bullVasodilatory Inflammatory MediatorsbullEndotoxin has direct vasodilatory

effectsbull Increased Nitric Oxide Production

Infection

InflammatoryMediators

Endothelial Dysfunction

Vasodilation

Hypotension Vasoconstriction Edema

Maldistribution of Microvascular Blood Flow

Organ Dysfunction

Microvascular Plugging

Ischemia

Cell Death

bullNormal compensation includesProgressive vasoconstriction Increased blood flow to major organs

Increased cardiac output Increased respiratory rate and volume

Decreased urine output

32

bull In shock the hydrostatic pressure decreases and the oncotic pressure is constant as a resultndash The fluid exchange from the capillary to the

extracellular space decreasesndash The fluid return from the extracellular space to

the capillary increasesThat will increase the blood volume which will

increase BP and will help to compensate shock situations

This system is known as the ldquoFluid shift systemrdquo

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 7: shock marker

Peripheral vasoconstrictionhellip

peripheral vascular peripheral vascular resistancehellipresistancehellip

peripheral vascular peripheral vascular resistancehellipresistancehellip

afterloadhellipafterloadhellip afterloadhellipafterloadhellip

blood pressureblood pressure blood pressureblood pressure

Peripheral vasodilationhellip

peripheral vascular peripheral vascular resistancehellipresistancehellip

peripheral vascular peripheral vascular resistancehellipresistancehellip

afterloadhellipafterloadhellip afterloadhellipafterloadhellip

blood pressureblood pressure blood pressureblood pressure

fluid volumehellip

preloadhellippreloadhellip preloadhellippreloadhellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

cardiac outputcardiac output cardiac outputcardiac output blood pressureblood pressure blood pressureblood pressure

fluid volumehellip

preloadhellippreloadhellip preloadhellippreloadhellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

cardiac outputcardiac output cardiac outputcardiac output blood pressureblood pressure blood pressureblood pressure

1048711 The human body responds to acutehemorrhage by activating 4 majorphysiologic systems the hematologicsystem the cardiovascular system therenal system and the neuroendocrinesystem

1048711 Platelets are activated which form an immatureclot on the bleeding source

1048711 The damaged vessel exposes collagen whichsubsequently causes fibrin deposition andstabilization of the clot

Hypovolemic Shock Cardiovascular System

1048711 Increases the heart rate increasing myocardialcontractility and constricting peripheral bloodvessels1048711 This response occurs secondary to an increase inrelease of norepinephrine and a decrease inbaseline vagal tone (regulated by thebaroreceptors in the carotid arch aortic arch leftatrium and pulmonary vessels)

1048711 The cardiovascular system also responds by redistributing blood to the brain heart and kidneys and away from skin muscle and GI tract

Hypovolemic Shock Renal System

1048711 The kidneys respond to hemorrhagicshock by stimulating an increase in renninsecretion from the juxtaglomerularapparatus

PlasmaPlasmavolumevolume

PlasmaPlasmavolumevolume

[Na+][Na+] [Na+][Na+]

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)Detected by

Releases

ReninReninReninRenin

AngiotensinogenAngiotensin IhellipAngiotensin IhellipAngiotensin IhellipAngiotensin Ihellip

Converts

ampOr

Via ACE(AngiotensinConvertingEnzyme)

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip vasoconstrictionvasoconstriction vasoconstrictionvasoconstriction PVRPVR PVRPVR

BPBP BPBP

thirstthirst thirstthirst

FluidFluidvolumevolume

FluidFluidvolumevolume

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

AdrenalAdrenalcortexcortex

AdrenalAdrenalcortexcortex

Releases

AldosteroneAldosteroneAldosteroneAldosteroneNa+Na+

reabsorptionreabsorption

Na+Na+reabsorptionreabsorption

COCO COCORASRASActivationActivation

RASRASActivationActivation

DyspneaDyspnea DyspneaDyspnea

OO22

supplysupply

OO22

supplysupply

VolumeVolumePreloadPreload

VolumeVolumePreloadPreload

SVRSVR SVRSVR

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedema

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedemaImpairedImpairedmyocardial functionmyocardial function

ImpairedImpairedmyocardial functionmyocardial function

MyocardialMyocardialOO22 demand demand

MyocardialMyocardialOO22 demand demand

CatecholamineCatecholamineReleaseRelease

CatecholamineCatecholamineReleaseRelease

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Vascular ToneVascular ToneVascular ToneVascular Tone

Massive VasodilationMassive VasodilationMassive VasodilationMassive Vasodilation

SVR amp PreloadSVR amp Preload SVR amp PreloadSVR amp Preload Cardiac OutputCardiac Output Cardiac OutputCardiac Output

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

Systemic Inflammatory Response Syndrome (SIRS) Systemic inflammatory response to a variety of severe clinical insults manifested by ge 2 of the following conditions Temperature gt38ordmC or lt36ordmC Heart rate gt90 beatsmin Respiratory rate gt20 breathsmin orPaCO2 lt32 torr (lt43 kPa) White blood cell count gt12000cellsmm3 lt4000 cellsmm3 or gt10immature (band) cells

Sepsis The presence of SIRS associated with a confirmed infectious process

Severe Sepsis Sepsis with either hypotension or systemic manifestations of hypoperfusionndash Lactic acidosis oliguria altered mental status

Septic Shock Sepsis with hypotension despite adequatefluid resuscitation associated with hypoperfusion abnormalities

bullHemodynamic AlterationsbullHyperdynamic State (ldquoWarm Shockrdquo)bullTachycardiabullElevated or normal cardiac outputbullDecreased systemic vascular resistance

bullHypodynamic State (ldquoCold Shockrdquo)bullLow cardiac output

Protein cactivation

bullCytokine production leads to massive production of endogenous vasodilators

bullStructural changes in the endothelium result in extravasation of intravascular fluid into interstitium and subsequent tissue edema

bullPlugging of select microvascular beds with neutrophils fibrin aggregates and microthrombi impair microvascular perfusion

bullOrgan-specific vasoconstriction

bullLoss of Sympathetic ResponsivenessbullDown-regulation of adrenergic receptor number and sensitivity possible altered signal transduction

bullVasodilatory Inflammatory MediatorsbullEndotoxin has direct vasodilatory

effectsbull Increased Nitric Oxide Production

Infection

InflammatoryMediators

Endothelial Dysfunction

Vasodilation

Hypotension Vasoconstriction Edema

Maldistribution of Microvascular Blood Flow

Organ Dysfunction

Microvascular Plugging

Ischemia

Cell Death

bullNormal compensation includesProgressive vasoconstriction Increased blood flow to major organs

Increased cardiac output Increased respiratory rate and volume

Decreased urine output

32

bull In shock the hydrostatic pressure decreases and the oncotic pressure is constant as a resultndash The fluid exchange from the capillary to the

extracellular space decreasesndash The fluid return from the extracellular space to

the capillary increasesThat will increase the blood volume which will

increase BP and will help to compensate shock situations

This system is known as the ldquoFluid shift systemrdquo

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 8: shock marker

Peripheral vasodilationhellip

peripheral vascular peripheral vascular resistancehellipresistancehellip

peripheral vascular peripheral vascular resistancehellipresistancehellip

afterloadhellipafterloadhellip afterloadhellipafterloadhellip

blood pressureblood pressure blood pressureblood pressure

fluid volumehellip

preloadhellippreloadhellip preloadhellippreloadhellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

cardiac outputcardiac output cardiac outputcardiac output blood pressureblood pressure blood pressureblood pressure

fluid volumehellip

preloadhellippreloadhellip preloadhellippreloadhellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

cardiac outputcardiac output cardiac outputcardiac output blood pressureblood pressure blood pressureblood pressure

1048711 The human body responds to acutehemorrhage by activating 4 majorphysiologic systems the hematologicsystem the cardiovascular system therenal system and the neuroendocrinesystem

1048711 Platelets are activated which form an immatureclot on the bleeding source

1048711 The damaged vessel exposes collagen whichsubsequently causes fibrin deposition andstabilization of the clot

Hypovolemic Shock Cardiovascular System

1048711 Increases the heart rate increasing myocardialcontractility and constricting peripheral bloodvessels1048711 This response occurs secondary to an increase inrelease of norepinephrine and a decrease inbaseline vagal tone (regulated by thebaroreceptors in the carotid arch aortic arch leftatrium and pulmonary vessels)

1048711 The cardiovascular system also responds by redistributing blood to the brain heart and kidneys and away from skin muscle and GI tract

Hypovolemic Shock Renal System

1048711 The kidneys respond to hemorrhagicshock by stimulating an increase in renninsecretion from the juxtaglomerularapparatus

PlasmaPlasmavolumevolume

PlasmaPlasmavolumevolume

[Na+][Na+] [Na+][Na+]

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)Detected by

Releases

ReninReninReninRenin

AngiotensinogenAngiotensin IhellipAngiotensin IhellipAngiotensin IhellipAngiotensin Ihellip

Converts

ampOr

Via ACE(AngiotensinConvertingEnzyme)

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip vasoconstrictionvasoconstriction vasoconstrictionvasoconstriction PVRPVR PVRPVR

BPBP BPBP

thirstthirst thirstthirst

FluidFluidvolumevolume

FluidFluidvolumevolume

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

AdrenalAdrenalcortexcortex

AdrenalAdrenalcortexcortex

Releases

AldosteroneAldosteroneAldosteroneAldosteroneNa+Na+

reabsorptionreabsorption

Na+Na+reabsorptionreabsorption

COCO COCORASRASActivationActivation

RASRASActivationActivation

DyspneaDyspnea DyspneaDyspnea

OO22

supplysupply

OO22

supplysupply

VolumeVolumePreloadPreload

VolumeVolumePreloadPreload

SVRSVR SVRSVR

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedema

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedemaImpairedImpairedmyocardial functionmyocardial function

ImpairedImpairedmyocardial functionmyocardial function

MyocardialMyocardialOO22 demand demand

MyocardialMyocardialOO22 demand demand

CatecholamineCatecholamineReleaseRelease

CatecholamineCatecholamineReleaseRelease

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Vascular ToneVascular ToneVascular ToneVascular Tone

Massive VasodilationMassive VasodilationMassive VasodilationMassive Vasodilation

SVR amp PreloadSVR amp Preload SVR amp PreloadSVR amp Preload Cardiac OutputCardiac Output Cardiac OutputCardiac Output

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

Systemic Inflammatory Response Syndrome (SIRS) Systemic inflammatory response to a variety of severe clinical insults manifested by ge 2 of the following conditions Temperature gt38ordmC or lt36ordmC Heart rate gt90 beatsmin Respiratory rate gt20 breathsmin orPaCO2 lt32 torr (lt43 kPa) White blood cell count gt12000cellsmm3 lt4000 cellsmm3 or gt10immature (band) cells

Sepsis The presence of SIRS associated with a confirmed infectious process

Severe Sepsis Sepsis with either hypotension or systemic manifestations of hypoperfusionndash Lactic acidosis oliguria altered mental status

Septic Shock Sepsis with hypotension despite adequatefluid resuscitation associated with hypoperfusion abnormalities

bullHemodynamic AlterationsbullHyperdynamic State (ldquoWarm Shockrdquo)bullTachycardiabullElevated or normal cardiac outputbullDecreased systemic vascular resistance

bullHypodynamic State (ldquoCold Shockrdquo)bullLow cardiac output

Protein cactivation

bullCytokine production leads to massive production of endogenous vasodilators

bullStructural changes in the endothelium result in extravasation of intravascular fluid into interstitium and subsequent tissue edema

bullPlugging of select microvascular beds with neutrophils fibrin aggregates and microthrombi impair microvascular perfusion

bullOrgan-specific vasoconstriction

bullLoss of Sympathetic ResponsivenessbullDown-regulation of adrenergic receptor number and sensitivity possible altered signal transduction

bullVasodilatory Inflammatory MediatorsbullEndotoxin has direct vasodilatory

effectsbull Increased Nitric Oxide Production

Infection

InflammatoryMediators

Endothelial Dysfunction

Vasodilation

Hypotension Vasoconstriction Edema

Maldistribution of Microvascular Blood Flow

Organ Dysfunction

Microvascular Plugging

Ischemia

Cell Death

bullNormal compensation includesProgressive vasoconstriction Increased blood flow to major organs

Increased cardiac output Increased respiratory rate and volume

Decreased urine output

32

bull In shock the hydrostatic pressure decreases and the oncotic pressure is constant as a resultndash The fluid exchange from the capillary to the

extracellular space decreasesndash The fluid return from the extracellular space to

the capillary increasesThat will increase the blood volume which will

increase BP and will help to compensate shock situations

This system is known as the ldquoFluid shift systemrdquo

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 9: shock marker

fluid volumehellip

preloadhellippreloadhellip preloadhellippreloadhellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

cardiac outputcardiac output cardiac outputcardiac output blood pressureblood pressure blood pressureblood pressure

fluid volumehellip

preloadhellippreloadhellip preloadhellippreloadhellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

cardiac outputcardiac output cardiac outputcardiac output blood pressureblood pressure blood pressureblood pressure

1048711 The human body responds to acutehemorrhage by activating 4 majorphysiologic systems the hematologicsystem the cardiovascular system therenal system and the neuroendocrinesystem

1048711 Platelets are activated which form an immatureclot on the bleeding source

1048711 The damaged vessel exposes collagen whichsubsequently causes fibrin deposition andstabilization of the clot

Hypovolemic Shock Cardiovascular System

1048711 Increases the heart rate increasing myocardialcontractility and constricting peripheral bloodvessels1048711 This response occurs secondary to an increase inrelease of norepinephrine and a decrease inbaseline vagal tone (regulated by thebaroreceptors in the carotid arch aortic arch leftatrium and pulmonary vessels)

1048711 The cardiovascular system also responds by redistributing blood to the brain heart and kidneys and away from skin muscle and GI tract

Hypovolemic Shock Renal System

1048711 The kidneys respond to hemorrhagicshock by stimulating an increase in renninsecretion from the juxtaglomerularapparatus

PlasmaPlasmavolumevolume

PlasmaPlasmavolumevolume

[Na+][Na+] [Na+][Na+]

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)Detected by

Releases

ReninReninReninRenin

AngiotensinogenAngiotensin IhellipAngiotensin IhellipAngiotensin IhellipAngiotensin Ihellip

Converts

ampOr

Via ACE(AngiotensinConvertingEnzyme)

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip vasoconstrictionvasoconstriction vasoconstrictionvasoconstriction PVRPVR PVRPVR

BPBP BPBP

thirstthirst thirstthirst

FluidFluidvolumevolume

FluidFluidvolumevolume

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

AdrenalAdrenalcortexcortex

AdrenalAdrenalcortexcortex

Releases

AldosteroneAldosteroneAldosteroneAldosteroneNa+Na+

reabsorptionreabsorption

Na+Na+reabsorptionreabsorption

COCO COCORASRASActivationActivation

RASRASActivationActivation

DyspneaDyspnea DyspneaDyspnea

OO22

supplysupply

OO22

supplysupply

VolumeVolumePreloadPreload

VolumeVolumePreloadPreload

SVRSVR SVRSVR

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedema

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedemaImpairedImpairedmyocardial functionmyocardial function

ImpairedImpairedmyocardial functionmyocardial function

MyocardialMyocardialOO22 demand demand

MyocardialMyocardialOO22 demand demand

CatecholamineCatecholamineReleaseRelease

CatecholamineCatecholamineReleaseRelease

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Vascular ToneVascular ToneVascular ToneVascular Tone

Massive VasodilationMassive VasodilationMassive VasodilationMassive Vasodilation

SVR amp PreloadSVR amp Preload SVR amp PreloadSVR amp Preload Cardiac OutputCardiac Output Cardiac OutputCardiac Output

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

Systemic Inflammatory Response Syndrome (SIRS) Systemic inflammatory response to a variety of severe clinical insults manifested by ge 2 of the following conditions Temperature gt38ordmC or lt36ordmC Heart rate gt90 beatsmin Respiratory rate gt20 breathsmin orPaCO2 lt32 torr (lt43 kPa) White blood cell count gt12000cellsmm3 lt4000 cellsmm3 or gt10immature (band) cells

Sepsis The presence of SIRS associated with a confirmed infectious process

Severe Sepsis Sepsis with either hypotension or systemic manifestations of hypoperfusionndash Lactic acidosis oliguria altered mental status

Septic Shock Sepsis with hypotension despite adequatefluid resuscitation associated with hypoperfusion abnormalities

bullHemodynamic AlterationsbullHyperdynamic State (ldquoWarm Shockrdquo)bullTachycardiabullElevated or normal cardiac outputbullDecreased systemic vascular resistance

bullHypodynamic State (ldquoCold Shockrdquo)bullLow cardiac output

Protein cactivation

bullCytokine production leads to massive production of endogenous vasodilators

bullStructural changes in the endothelium result in extravasation of intravascular fluid into interstitium and subsequent tissue edema

bullPlugging of select microvascular beds with neutrophils fibrin aggregates and microthrombi impair microvascular perfusion

bullOrgan-specific vasoconstriction

bullLoss of Sympathetic ResponsivenessbullDown-regulation of adrenergic receptor number and sensitivity possible altered signal transduction

bullVasodilatory Inflammatory MediatorsbullEndotoxin has direct vasodilatory

effectsbull Increased Nitric Oxide Production

Infection

InflammatoryMediators

Endothelial Dysfunction

Vasodilation

Hypotension Vasoconstriction Edema

Maldistribution of Microvascular Blood Flow

Organ Dysfunction

Microvascular Plugging

Ischemia

Cell Death

bullNormal compensation includesProgressive vasoconstriction Increased blood flow to major organs

Increased cardiac output Increased respiratory rate and volume

Decreased urine output

32

bull In shock the hydrostatic pressure decreases and the oncotic pressure is constant as a resultndash The fluid exchange from the capillary to the

extracellular space decreasesndash The fluid return from the extracellular space to

the capillary increasesThat will increase the blood volume which will

increase BP and will help to compensate shock situations

This system is known as the ldquoFluid shift systemrdquo

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 10: shock marker

fluid volumehellip

preloadhellippreloadhellip preloadhellippreloadhellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

contractility contractility (Starlingrsquos Law)hellip(Starlingrsquos Law)hellip

cardiac outputcardiac output cardiac outputcardiac output blood pressureblood pressure blood pressureblood pressure

1048711 The human body responds to acutehemorrhage by activating 4 majorphysiologic systems the hematologicsystem the cardiovascular system therenal system and the neuroendocrinesystem

1048711 Platelets are activated which form an immatureclot on the bleeding source

1048711 The damaged vessel exposes collagen whichsubsequently causes fibrin deposition andstabilization of the clot

Hypovolemic Shock Cardiovascular System

1048711 Increases the heart rate increasing myocardialcontractility and constricting peripheral bloodvessels1048711 This response occurs secondary to an increase inrelease of norepinephrine and a decrease inbaseline vagal tone (regulated by thebaroreceptors in the carotid arch aortic arch leftatrium and pulmonary vessels)

1048711 The cardiovascular system also responds by redistributing blood to the brain heart and kidneys and away from skin muscle and GI tract

Hypovolemic Shock Renal System

1048711 The kidneys respond to hemorrhagicshock by stimulating an increase in renninsecretion from the juxtaglomerularapparatus

PlasmaPlasmavolumevolume

PlasmaPlasmavolumevolume

[Na+][Na+] [Na+][Na+]

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)Detected by

Releases

ReninReninReninRenin

AngiotensinogenAngiotensin IhellipAngiotensin IhellipAngiotensin IhellipAngiotensin Ihellip

Converts

ampOr

Via ACE(AngiotensinConvertingEnzyme)

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip vasoconstrictionvasoconstriction vasoconstrictionvasoconstriction PVRPVR PVRPVR

BPBP BPBP

thirstthirst thirstthirst

FluidFluidvolumevolume

FluidFluidvolumevolume

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

AdrenalAdrenalcortexcortex

AdrenalAdrenalcortexcortex

Releases

AldosteroneAldosteroneAldosteroneAldosteroneNa+Na+

reabsorptionreabsorption

Na+Na+reabsorptionreabsorption

COCO COCORASRASActivationActivation

RASRASActivationActivation

DyspneaDyspnea DyspneaDyspnea

OO22

supplysupply

OO22

supplysupply

VolumeVolumePreloadPreload

VolumeVolumePreloadPreload

SVRSVR SVRSVR

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedema

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedemaImpairedImpairedmyocardial functionmyocardial function

ImpairedImpairedmyocardial functionmyocardial function

MyocardialMyocardialOO22 demand demand

MyocardialMyocardialOO22 demand demand

CatecholamineCatecholamineReleaseRelease

CatecholamineCatecholamineReleaseRelease

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Vascular ToneVascular ToneVascular ToneVascular Tone

Massive VasodilationMassive VasodilationMassive VasodilationMassive Vasodilation

SVR amp PreloadSVR amp Preload SVR amp PreloadSVR amp Preload Cardiac OutputCardiac Output Cardiac OutputCardiac Output

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

Systemic Inflammatory Response Syndrome (SIRS) Systemic inflammatory response to a variety of severe clinical insults manifested by ge 2 of the following conditions Temperature gt38ordmC or lt36ordmC Heart rate gt90 beatsmin Respiratory rate gt20 breathsmin orPaCO2 lt32 torr (lt43 kPa) White blood cell count gt12000cellsmm3 lt4000 cellsmm3 or gt10immature (band) cells

Sepsis The presence of SIRS associated with a confirmed infectious process

Severe Sepsis Sepsis with either hypotension or systemic manifestations of hypoperfusionndash Lactic acidosis oliguria altered mental status

Septic Shock Sepsis with hypotension despite adequatefluid resuscitation associated with hypoperfusion abnormalities

bullHemodynamic AlterationsbullHyperdynamic State (ldquoWarm Shockrdquo)bullTachycardiabullElevated or normal cardiac outputbullDecreased systemic vascular resistance

bullHypodynamic State (ldquoCold Shockrdquo)bullLow cardiac output

Protein cactivation

bullCytokine production leads to massive production of endogenous vasodilators

bullStructural changes in the endothelium result in extravasation of intravascular fluid into interstitium and subsequent tissue edema

bullPlugging of select microvascular beds with neutrophils fibrin aggregates and microthrombi impair microvascular perfusion

bullOrgan-specific vasoconstriction

bullLoss of Sympathetic ResponsivenessbullDown-regulation of adrenergic receptor number and sensitivity possible altered signal transduction

bullVasodilatory Inflammatory MediatorsbullEndotoxin has direct vasodilatory

effectsbull Increased Nitric Oxide Production

Infection

InflammatoryMediators

Endothelial Dysfunction

Vasodilation

Hypotension Vasoconstriction Edema

Maldistribution of Microvascular Blood Flow

Organ Dysfunction

Microvascular Plugging

Ischemia

Cell Death

bullNormal compensation includesProgressive vasoconstriction Increased blood flow to major organs

Increased cardiac output Increased respiratory rate and volume

Decreased urine output

32

bull In shock the hydrostatic pressure decreases and the oncotic pressure is constant as a resultndash The fluid exchange from the capillary to the

extracellular space decreasesndash The fluid return from the extracellular space to

the capillary increasesThat will increase the blood volume which will

increase BP and will help to compensate shock situations

This system is known as the ldquoFluid shift systemrdquo

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 11: shock marker

1048711 The human body responds to acutehemorrhage by activating 4 majorphysiologic systems the hematologicsystem the cardiovascular system therenal system and the neuroendocrinesystem

1048711 Platelets are activated which form an immatureclot on the bleeding source

1048711 The damaged vessel exposes collagen whichsubsequently causes fibrin deposition andstabilization of the clot

Hypovolemic Shock Cardiovascular System

1048711 Increases the heart rate increasing myocardialcontractility and constricting peripheral bloodvessels1048711 This response occurs secondary to an increase inrelease of norepinephrine and a decrease inbaseline vagal tone (regulated by thebaroreceptors in the carotid arch aortic arch leftatrium and pulmonary vessels)

1048711 The cardiovascular system also responds by redistributing blood to the brain heart and kidneys and away from skin muscle and GI tract

Hypovolemic Shock Renal System

1048711 The kidneys respond to hemorrhagicshock by stimulating an increase in renninsecretion from the juxtaglomerularapparatus

PlasmaPlasmavolumevolume

PlasmaPlasmavolumevolume

[Na+][Na+] [Na+][Na+]

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)Detected by

Releases

ReninReninReninRenin

AngiotensinogenAngiotensin IhellipAngiotensin IhellipAngiotensin IhellipAngiotensin Ihellip

Converts

ampOr

Via ACE(AngiotensinConvertingEnzyme)

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip vasoconstrictionvasoconstriction vasoconstrictionvasoconstriction PVRPVR PVRPVR

BPBP BPBP

thirstthirst thirstthirst

FluidFluidvolumevolume

FluidFluidvolumevolume

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

AdrenalAdrenalcortexcortex

AdrenalAdrenalcortexcortex

Releases

AldosteroneAldosteroneAldosteroneAldosteroneNa+Na+

reabsorptionreabsorption

Na+Na+reabsorptionreabsorption

COCO COCORASRASActivationActivation

RASRASActivationActivation

DyspneaDyspnea DyspneaDyspnea

OO22

supplysupply

OO22

supplysupply

VolumeVolumePreloadPreload

VolumeVolumePreloadPreload

SVRSVR SVRSVR

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedema

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedemaImpairedImpairedmyocardial functionmyocardial function

ImpairedImpairedmyocardial functionmyocardial function

MyocardialMyocardialOO22 demand demand

MyocardialMyocardialOO22 demand demand

CatecholamineCatecholamineReleaseRelease

CatecholamineCatecholamineReleaseRelease

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Vascular ToneVascular ToneVascular ToneVascular Tone

Massive VasodilationMassive VasodilationMassive VasodilationMassive Vasodilation

SVR amp PreloadSVR amp Preload SVR amp PreloadSVR amp Preload Cardiac OutputCardiac Output Cardiac OutputCardiac Output

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

Systemic Inflammatory Response Syndrome (SIRS) Systemic inflammatory response to a variety of severe clinical insults manifested by ge 2 of the following conditions Temperature gt38ordmC or lt36ordmC Heart rate gt90 beatsmin Respiratory rate gt20 breathsmin orPaCO2 lt32 torr (lt43 kPa) White blood cell count gt12000cellsmm3 lt4000 cellsmm3 or gt10immature (band) cells

Sepsis The presence of SIRS associated with a confirmed infectious process

Severe Sepsis Sepsis with either hypotension or systemic manifestations of hypoperfusionndash Lactic acidosis oliguria altered mental status

Septic Shock Sepsis with hypotension despite adequatefluid resuscitation associated with hypoperfusion abnormalities

bullHemodynamic AlterationsbullHyperdynamic State (ldquoWarm Shockrdquo)bullTachycardiabullElevated or normal cardiac outputbullDecreased systemic vascular resistance

bullHypodynamic State (ldquoCold Shockrdquo)bullLow cardiac output

Protein cactivation

bullCytokine production leads to massive production of endogenous vasodilators

bullStructural changes in the endothelium result in extravasation of intravascular fluid into interstitium and subsequent tissue edema

bullPlugging of select microvascular beds with neutrophils fibrin aggregates and microthrombi impair microvascular perfusion

bullOrgan-specific vasoconstriction

bullLoss of Sympathetic ResponsivenessbullDown-regulation of adrenergic receptor number and sensitivity possible altered signal transduction

bullVasodilatory Inflammatory MediatorsbullEndotoxin has direct vasodilatory

effectsbull Increased Nitric Oxide Production

Infection

InflammatoryMediators

Endothelial Dysfunction

Vasodilation

Hypotension Vasoconstriction Edema

Maldistribution of Microvascular Blood Flow

Organ Dysfunction

Microvascular Plugging

Ischemia

Cell Death

bullNormal compensation includesProgressive vasoconstriction Increased blood flow to major organs

Increased cardiac output Increased respiratory rate and volume

Decreased urine output

32

bull In shock the hydrostatic pressure decreases and the oncotic pressure is constant as a resultndash The fluid exchange from the capillary to the

extracellular space decreasesndash The fluid return from the extracellular space to

the capillary increasesThat will increase the blood volume which will

increase BP and will help to compensate shock situations

This system is known as the ldquoFluid shift systemrdquo

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 12: shock marker

1048711 Platelets are activated which form an immatureclot on the bleeding source

1048711 The damaged vessel exposes collagen whichsubsequently causes fibrin deposition andstabilization of the clot

Hypovolemic Shock Cardiovascular System

1048711 Increases the heart rate increasing myocardialcontractility and constricting peripheral bloodvessels1048711 This response occurs secondary to an increase inrelease of norepinephrine and a decrease inbaseline vagal tone (regulated by thebaroreceptors in the carotid arch aortic arch leftatrium and pulmonary vessels)

1048711 The cardiovascular system also responds by redistributing blood to the brain heart and kidneys and away from skin muscle and GI tract

Hypovolemic Shock Renal System

1048711 The kidneys respond to hemorrhagicshock by stimulating an increase in renninsecretion from the juxtaglomerularapparatus

PlasmaPlasmavolumevolume

PlasmaPlasmavolumevolume

[Na+][Na+] [Na+][Na+]

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)Detected by

Releases

ReninReninReninRenin

AngiotensinogenAngiotensin IhellipAngiotensin IhellipAngiotensin IhellipAngiotensin Ihellip

Converts

ampOr

Via ACE(AngiotensinConvertingEnzyme)

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip vasoconstrictionvasoconstriction vasoconstrictionvasoconstriction PVRPVR PVRPVR

BPBP BPBP

thirstthirst thirstthirst

FluidFluidvolumevolume

FluidFluidvolumevolume

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

AdrenalAdrenalcortexcortex

AdrenalAdrenalcortexcortex

Releases

AldosteroneAldosteroneAldosteroneAldosteroneNa+Na+

reabsorptionreabsorption

Na+Na+reabsorptionreabsorption

COCO COCORASRASActivationActivation

RASRASActivationActivation

DyspneaDyspnea DyspneaDyspnea

OO22

supplysupply

OO22

supplysupply

VolumeVolumePreloadPreload

VolumeVolumePreloadPreload

SVRSVR SVRSVR

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedema

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedemaImpairedImpairedmyocardial functionmyocardial function

ImpairedImpairedmyocardial functionmyocardial function

MyocardialMyocardialOO22 demand demand

MyocardialMyocardialOO22 demand demand

CatecholamineCatecholamineReleaseRelease

CatecholamineCatecholamineReleaseRelease

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Vascular ToneVascular ToneVascular ToneVascular Tone

Massive VasodilationMassive VasodilationMassive VasodilationMassive Vasodilation

SVR amp PreloadSVR amp Preload SVR amp PreloadSVR amp Preload Cardiac OutputCardiac Output Cardiac OutputCardiac Output

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

Systemic Inflammatory Response Syndrome (SIRS) Systemic inflammatory response to a variety of severe clinical insults manifested by ge 2 of the following conditions Temperature gt38ordmC or lt36ordmC Heart rate gt90 beatsmin Respiratory rate gt20 breathsmin orPaCO2 lt32 torr (lt43 kPa) White blood cell count gt12000cellsmm3 lt4000 cellsmm3 or gt10immature (band) cells

Sepsis The presence of SIRS associated with a confirmed infectious process

Severe Sepsis Sepsis with either hypotension or systemic manifestations of hypoperfusionndash Lactic acidosis oliguria altered mental status

Septic Shock Sepsis with hypotension despite adequatefluid resuscitation associated with hypoperfusion abnormalities

bullHemodynamic AlterationsbullHyperdynamic State (ldquoWarm Shockrdquo)bullTachycardiabullElevated or normal cardiac outputbullDecreased systemic vascular resistance

bullHypodynamic State (ldquoCold Shockrdquo)bullLow cardiac output

Protein cactivation

bullCytokine production leads to massive production of endogenous vasodilators

bullStructural changes in the endothelium result in extravasation of intravascular fluid into interstitium and subsequent tissue edema

bullPlugging of select microvascular beds with neutrophils fibrin aggregates and microthrombi impair microvascular perfusion

bullOrgan-specific vasoconstriction

bullLoss of Sympathetic ResponsivenessbullDown-regulation of adrenergic receptor number and sensitivity possible altered signal transduction

bullVasodilatory Inflammatory MediatorsbullEndotoxin has direct vasodilatory

effectsbull Increased Nitric Oxide Production

Infection

InflammatoryMediators

Endothelial Dysfunction

Vasodilation

Hypotension Vasoconstriction Edema

Maldistribution of Microvascular Blood Flow

Organ Dysfunction

Microvascular Plugging

Ischemia

Cell Death

bullNormal compensation includesProgressive vasoconstriction Increased blood flow to major organs

Increased cardiac output Increased respiratory rate and volume

Decreased urine output

32

bull In shock the hydrostatic pressure decreases and the oncotic pressure is constant as a resultndash The fluid exchange from the capillary to the

extracellular space decreasesndash The fluid return from the extracellular space to

the capillary increasesThat will increase the blood volume which will

increase BP and will help to compensate shock situations

This system is known as the ldquoFluid shift systemrdquo

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 13: shock marker

Hypovolemic Shock Cardiovascular System

1048711 Increases the heart rate increasing myocardialcontractility and constricting peripheral bloodvessels1048711 This response occurs secondary to an increase inrelease of norepinephrine and a decrease inbaseline vagal tone (regulated by thebaroreceptors in the carotid arch aortic arch leftatrium and pulmonary vessels)

1048711 The cardiovascular system also responds by redistributing blood to the brain heart and kidneys and away from skin muscle and GI tract

Hypovolemic Shock Renal System

1048711 The kidneys respond to hemorrhagicshock by stimulating an increase in renninsecretion from the juxtaglomerularapparatus

PlasmaPlasmavolumevolume

PlasmaPlasmavolumevolume

[Na+][Na+] [Na+][Na+]

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)Detected by

Releases

ReninReninReninRenin

AngiotensinogenAngiotensin IhellipAngiotensin IhellipAngiotensin IhellipAngiotensin Ihellip

Converts

ampOr

Via ACE(AngiotensinConvertingEnzyme)

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip vasoconstrictionvasoconstriction vasoconstrictionvasoconstriction PVRPVR PVRPVR

BPBP BPBP

thirstthirst thirstthirst

FluidFluidvolumevolume

FluidFluidvolumevolume

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

AdrenalAdrenalcortexcortex

AdrenalAdrenalcortexcortex

Releases

AldosteroneAldosteroneAldosteroneAldosteroneNa+Na+

reabsorptionreabsorption

Na+Na+reabsorptionreabsorption

COCO COCORASRASActivationActivation

RASRASActivationActivation

DyspneaDyspnea DyspneaDyspnea

OO22

supplysupply

OO22

supplysupply

VolumeVolumePreloadPreload

VolumeVolumePreloadPreload

SVRSVR SVRSVR

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedema

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedemaImpairedImpairedmyocardial functionmyocardial function

ImpairedImpairedmyocardial functionmyocardial function

MyocardialMyocardialOO22 demand demand

MyocardialMyocardialOO22 demand demand

CatecholamineCatecholamineReleaseRelease

CatecholamineCatecholamineReleaseRelease

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Vascular ToneVascular ToneVascular ToneVascular Tone

Massive VasodilationMassive VasodilationMassive VasodilationMassive Vasodilation

SVR amp PreloadSVR amp Preload SVR amp PreloadSVR amp Preload Cardiac OutputCardiac Output Cardiac OutputCardiac Output

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

Systemic Inflammatory Response Syndrome (SIRS) Systemic inflammatory response to a variety of severe clinical insults manifested by ge 2 of the following conditions Temperature gt38ordmC or lt36ordmC Heart rate gt90 beatsmin Respiratory rate gt20 breathsmin orPaCO2 lt32 torr (lt43 kPa) White blood cell count gt12000cellsmm3 lt4000 cellsmm3 or gt10immature (band) cells

Sepsis The presence of SIRS associated with a confirmed infectious process

Severe Sepsis Sepsis with either hypotension or systemic manifestations of hypoperfusionndash Lactic acidosis oliguria altered mental status

Septic Shock Sepsis with hypotension despite adequatefluid resuscitation associated with hypoperfusion abnormalities

bullHemodynamic AlterationsbullHyperdynamic State (ldquoWarm Shockrdquo)bullTachycardiabullElevated or normal cardiac outputbullDecreased systemic vascular resistance

bullHypodynamic State (ldquoCold Shockrdquo)bullLow cardiac output

Protein cactivation

bullCytokine production leads to massive production of endogenous vasodilators

bullStructural changes in the endothelium result in extravasation of intravascular fluid into interstitium and subsequent tissue edema

bullPlugging of select microvascular beds with neutrophils fibrin aggregates and microthrombi impair microvascular perfusion

bullOrgan-specific vasoconstriction

bullLoss of Sympathetic ResponsivenessbullDown-regulation of adrenergic receptor number and sensitivity possible altered signal transduction

bullVasodilatory Inflammatory MediatorsbullEndotoxin has direct vasodilatory

effectsbull Increased Nitric Oxide Production

Infection

InflammatoryMediators

Endothelial Dysfunction

Vasodilation

Hypotension Vasoconstriction Edema

Maldistribution of Microvascular Blood Flow

Organ Dysfunction

Microvascular Plugging

Ischemia

Cell Death

bullNormal compensation includesProgressive vasoconstriction Increased blood flow to major organs

Increased cardiac output Increased respiratory rate and volume

Decreased urine output

32

bull In shock the hydrostatic pressure decreases and the oncotic pressure is constant as a resultndash The fluid exchange from the capillary to the

extracellular space decreasesndash The fluid return from the extracellular space to

the capillary increasesThat will increase the blood volume which will

increase BP and will help to compensate shock situations

This system is known as the ldquoFluid shift systemrdquo

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 14: shock marker

1048711 The cardiovascular system also responds by redistributing blood to the brain heart and kidneys and away from skin muscle and GI tract

Hypovolemic Shock Renal System

1048711 The kidneys respond to hemorrhagicshock by stimulating an increase in renninsecretion from the juxtaglomerularapparatus

PlasmaPlasmavolumevolume

PlasmaPlasmavolumevolume

[Na+][Na+] [Na+][Na+]

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)Detected by

Releases

ReninReninReninRenin

AngiotensinogenAngiotensin IhellipAngiotensin IhellipAngiotensin IhellipAngiotensin Ihellip

Converts

ampOr

Via ACE(AngiotensinConvertingEnzyme)

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip vasoconstrictionvasoconstriction vasoconstrictionvasoconstriction PVRPVR PVRPVR

BPBP BPBP

thirstthirst thirstthirst

FluidFluidvolumevolume

FluidFluidvolumevolume

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

AdrenalAdrenalcortexcortex

AdrenalAdrenalcortexcortex

Releases

AldosteroneAldosteroneAldosteroneAldosteroneNa+Na+

reabsorptionreabsorption

Na+Na+reabsorptionreabsorption

COCO COCORASRASActivationActivation

RASRASActivationActivation

DyspneaDyspnea DyspneaDyspnea

OO22

supplysupply

OO22

supplysupply

VolumeVolumePreloadPreload

VolumeVolumePreloadPreload

SVRSVR SVRSVR

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedema

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedemaImpairedImpairedmyocardial functionmyocardial function

ImpairedImpairedmyocardial functionmyocardial function

MyocardialMyocardialOO22 demand demand

MyocardialMyocardialOO22 demand demand

CatecholamineCatecholamineReleaseRelease

CatecholamineCatecholamineReleaseRelease

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Vascular ToneVascular ToneVascular ToneVascular Tone

Massive VasodilationMassive VasodilationMassive VasodilationMassive Vasodilation

SVR amp PreloadSVR amp Preload SVR amp PreloadSVR amp Preload Cardiac OutputCardiac Output Cardiac OutputCardiac Output

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

Systemic Inflammatory Response Syndrome (SIRS) Systemic inflammatory response to a variety of severe clinical insults manifested by ge 2 of the following conditions Temperature gt38ordmC or lt36ordmC Heart rate gt90 beatsmin Respiratory rate gt20 breathsmin orPaCO2 lt32 torr (lt43 kPa) White blood cell count gt12000cellsmm3 lt4000 cellsmm3 or gt10immature (band) cells

Sepsis The presence of SIRS associated with a confirmed infectious process

Severe Sepsis Sepsis with either hypotension or systemic manifestations of hypoperfusionndash Lactic acidosis oliguria altered mental status

Septic Shock Sepsis with hypotension despite adequatefluid resuscitation associated with hypoperfusion abnormalities

bullHemodynamic AlterationsbullHyperdynamic State (ldquoWarm Shockrdquo)bullTachycardiabullElevated or normal cardiac outputbullDecreased systemic vascular resistance

bullHypodynamic State (ldquoCold Shockrdquo)bullLow cardiac output

Protein cactivation

bullCytokine production leads to massive production of endogenous vasodilators

bullStructural changes in the endothelium result in extravasation of intravascular fluid into interstitium and subsequent tissue edema

bullPlugging of select microvascular beds with neutrophils fibrin aggregates and microthrombi impair microvascular perfusion

bullOrgan-specific vasoconstriction

bullLoss of Sympathetic ResponsivenessbullDown-regulation of adrenergic receptor number and sensitivity possible altered signal transduction

bullVasodilatory Inflammatory MediatorsbullEndotoxin has direct vasodilatory

effectsbull Increased Nitric Oxide Production

Infection

InflammatoryMediators

Endothelial Dysfunction

Vasodilation

Hypotension Vasoconstriction Edema

Maldistribution of Microvascular Blood Flow

Organ Dysfunction

Microvascular Plugging

Ischemia

Cell Death

bullNormal compensation includesProgressive vasoconstriction Increased blood flow to major organs

Increased cardiac output Increased respiratory rate and volume

Decreased urine output

32

bull In shock the hydrostatic pressure decreases and the oncotic pressure is constant as a resultndash The fluid exchange from the capillary to the

extracellular space decreasesndash The fluid return from the extracellular space to

the capillary increasesThat will increase the blood volume which will

increase BP and will help to compensate shock situations

This system is known as the ldquoFluid shift systemrdquo

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 15: shock marker

Hypovolemic Shock Renal System

1048711 The kidneys respond to hemorrhagicshock by stimulating an increase in renninsecretion from the juxtaglomerularapparatus

PlasmaPlasmavolumevolume

PlasmaPlasmavolumevolume

[Na+][Na+] [Na+][Na+]

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)Detected by

Releases

ReninReninReninRenin

AngiotensinogenAngiotensin IhellipAngiotensin IhellipAngiotensin IhellipAngiotensin Ihellip

Converts

ampOr

Via ACE(AngiotensinConvertingEnzyme)

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip vasoconstrictionvasoconstriction vasoconstrictionvasoconstriction PVRPVR PVRPVR

BPBP BPBP

thirstthirst thirstthirst

FluidFluidvolumevolume

FluidFluidvolumevolume

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

AdrenalAdrenalcortexcortex

AdrenalAdrenalcortexcortex

Releases

AldosteroneAldosteroneAldosteroneAldosteroneNa+Na+

reabsorptionreabsorption

Na+Na+reabsorptionreabsorption

COCO COCORASRASActivationActivation

RASRASActivationActivation

DyspneaDyspnea DyspneaDyspnea

OO22

supplysupply

OO22

supplysupply

VolumeVolumePreloadPreload

VolumeVolumePreloadPreload

SVRSVR SVRSVR

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedema

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedemaImpairedImpairedmyocardial functionmyocardial function

ImpairedImpairedmyocardial functionmyocardial function

MyocardialMyocardialOO22 demand demand

MyocardialMyocardialOO22 demand demand

CatecholamineCatecholamineReleaseRelease

CatecholamineCatecholamineReleaseRelease

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Vascular ToneVascular ToneVascular ToneVascular Tone

Massive VasodilationMassive VasodilationMassive VasodilationMassive Vasodilation

SVR amp PreloadSVR amp Preload SVR amp PreloadSVR amp Preload Cardiac OutputCardiac Output Cardiac OutputCardiac Output

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

Systemic Inflammatory Response Syndrome (SIRS) Systemic inflammatory response to a variety of severe clinical insults manifested by ge 2 of the following conditions Temperature gt38ordmC or lt36ordmC Heart rate gt90 beatsmin Respiratory rate gt20 breathsmin orPaCO2 lt32 torr (lt43 kPa) White blood cell count gt12000cellsmm3 lt4000 cellsmm3 or gt10immature (band) cells

Sepsis The presence of SIRS associated with a confirmed infectious process

Severe Sepsis Sepsis with either hypotension or systemic manifestations of hypoperfusionndash Lactic acidosis oliguria altered mental status

Septic Shock Sepsis with hypotension despite adequatefluid resuscitation associated with hypoperfusion abnormalities

bullHemodynamic AlterationsbullHyperdynamic State (ldquoWarm Shockrdquo)bullTachycardiabullElevated or normal cardiac outputbullDecreased systemic vascular resistance

bullHypodynamic State (ldquoCold Shockrdquo)bullLow cardiac output

Protein cactivation

bullCytokine production leads to massive production of endogenous vasodilators

bullStructural changes in the endothelium result in extravasation of intravascular fluid into interstitium and subsequent tissue edema

bullPlugging of select microvascular beds with neutrophils fibrin aggregates and microthrombi impair microvascular perfusion

bullOrgan-specific vasoconstriction

bullLoss of Sympathetic ResponsivenessbullDown-regulation of adrenergic receptor number and sensitivity possible altered signal transduction

bullVasodilatory Inflammatory MediatorsbullEndotoxin has direct vasodilatory

effectsbull Increased Nitric Oxide Production

Infection

InflammatoryMediators

Endothelial Dysfunction

Vasodilation

Hypotension Vasoconstriction Edema

Maldistribution of Microvascular Blood Flow

Organ Dysfunction

Microvascular Plugging

Ischemia

Cell Death

bullNormal compensation includesProgressive vasoconstriction Increased blood flow to major organs

Increased cardiac output Increased respiratory rate and volume

Decreased urine output

32

bull In shock the hydrostatic pressure decreases and the oncotic pressure is constant as a resultndash The fluid exchange from the capillary to the

extracellular space decreasesndash The fluid return from the extracellular space to

the capillary increasesThat will increase the blood volume which will

increase BP and will help to compensate shock situations

This system is known as the ldquoFluid shift systemrdquo

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 16: shock marker

PlasmaPlasmavolumevolume

PlasmaPlasmavolumevolume

[Na+][Na+] [Na+][Na+]

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)

KidneyKidney(juxtaglomerular(juxtaglomerular

apparatus)apparatus)Detected by

Releases

ReninReninReninRenin

AngiotensinogenAngiotensin IhellipAngiotensin IhellipAngiotensin IhellipAngiotensin Ihellip

Converts

ampOr

Via ACE(AngiotensinConvertingEnzyme)

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip vasoconstrictionvasoconstriction vasoconstrictionvasoconstriction PVRPVR PVRPVR

BPBP BPBP

thirstthirst thirstthirst

FluidFluidvolumevolume

FluidFluidvolumevolume

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

AdrenalAdrenalcortexcortex

AdrenalAdrenalcortexcortex

Releases

AldosteroneAldosteroneAldosteroneAldosteroneNa+Na+

reabsorptionreabsorption

Na+Na+reabsorptionreabsorption

COCO COCORASRASActivationActivation

RASRASActivationActivation

DyspneaDyspnea DyspneaDyspnea

OO22

supplysupply

OO22

supplysupply

VolumeVolumePreloadPreload

VolumeVolumePreloadPreload

SVRSVR SVRSVR

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedema

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedemaImpairedImpairedmyocardial functionmyocardial function

ImpairedImpairedmyocardial functionmyocardial function

MyocardialMyocardialOO22 demand demand

MyocardialMyocardialOO22 demand demand

CatecholamineCatecholamineReleaseRelease

CatecholamineCatecholamineReleaseRelease

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Vascular ToneVascular ToneVascular ToneVascular Tone

Massive VasodilationMassive VasodilationMassive VasodilationMassive Vasodilation

SVR amp PreloadSVR amp Preload SVR amp PreloadSVR amp Preload Cardiac OutputCardiac Output Cardiac OutputCardiac Output

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

Systemic Inflammatory Response Syndrome (SIRS) Systemic inflammatory response to a variety of severe clinical insults manifested by ge 2 of the following conditions Temperature gt38ordmC or lt36ordmC Heart rate gt90 beatsmin Respiratory rate gt20 breathsmin orPaCO2 lt32 torr (lt43 kPa) White blood cell count gt12000cellsmm3 lt4000 cellsmm3 or gt10immature (band) cells

Sepsis The presence of SIRS associated with a confirmed infectious process

Severe Sepsis Sepsis with either hypotension or systemic manifestations of hypoperfusionndash Lactic acidosis oliguria altered mental status

Septic Shock Sepsis with hypotension despite adequatefluid resuscitation associated with hypoperfusion abnormalities

bullHemodynamic AlterationsbullHyperdynamic State (ldquoWarm Shockrdquo)bullTachycardiabullElevated or normal cardiac outputbullDecreased systemic vascular resistance

bullHypodynamic State (ldquoCold Shockrdquo)bullLow cardiac output

Protein cactivation

bullCytokine production leads to massive production of endogenous vasodilators

bullStructural changes in the endothelium result in extravasation of intravascular fluid into interstitium and subsequent tissue edema

bullPlugging of select microvascular beds with neutrophils fibrin aggregates and microthrombi impair microvascular perfusion

bullOrgan-specific vasoconstriction

bullLoss of Sympathetic ResponsivenessbullDown-regulation of adrenergic receptor number and sensitivity possible altered signal transduction

bullVasodilatory Inflammatory MediatorsbullEndotoxin has direct vasodilatory

effectsbull Increased Nitric Oxide Production

Infection

InflammatoryMediators

Endothelial Dysfunction

Vasodilation

Hypotension Vasoconstriction Edema

Maldistribution of Microvascular Blood Flow

Organ Dysfunction

Microvascular Plugging

Ischemia

Cell Death

bullNormal compensation includesProgressive vasoconstriction Increased blood flow to major organs

Increased cardiac output Increased respiratory rate and volume

Decreased urine output

32

bull In shock the hydrostatic pressure decreases and the oncotic pressure is constant as a resultndash The fluid exchange from the capillary to the

extracellular space decreasesndash The fluid return from the extracellular space to

the capillary increasesThat will increase the blood volume which will

increase BP and will help to compensate shock situations

This system is known as the ldquoFluid shift systemrdquo

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 17: shock marker

Angiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellipAngiotensin IIhellip vasoconstrictionvasoconstriction vasoconstrictionvasoconstriction PVRPVR PVRPVR

BPBP BPBP

thirstthirst thirstthirst

FluidFluidvolumevolume

FluidFluidvolumevolume

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

ADHADH(anti-diuretic(anti-diuretic

hormone)hormone)

AdrenalAdrenalcortexcortex

AdrenalAdrenalcortexcortex

Releases

AldosteroneAldosteroneAldosteroneAldosteroneNa+Na+

reabsorptionreabsorption

Na+Na+reabsorptionreabsorption

COCO COCORASRASActivationActivation

RASRASActivationActivation

DyspneaDyspnea DyspneaDyspnea

OO22

supplysupply

OO22

supplysupply

VolumeVolumePreloadPreload

VolumeVolumePreloadPreload

SVRSVR SVRSVR

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedema

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedemaImpairedImpairedmyocardial functionmyocardial function

ImpairedImpairedmyocardial functionmyocardial function

MyocardialMyocardialOO22 demand demand

MyocardialMyocardialOO22 demand demand

CatecholamineCatecholamineReleaseRelease

CatecholamineCatecholamineReleaseRelease

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Vascular ToneVascular ToneVascular ToneVascular Tone

Massive VasodilationMassive VasodilationMassive VasodilationMassive Vasodilation

SVR amp PreloadSVR amp Preload SVR amp PreloadSVR amp Preload Cardiac OutputCardiac Output Cardiac OutputCardiac Output

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

Systemic Inflammatory Response Syndrome (SIRS) Systemic inflammatory response to a variety of severe clinical insults manifested by ge 2 of the following conditions Temperature gt38ordmC or lt36ordmC Heart rate gt90 beatsmin Respiratory rate gt20 breathsmin orPaCO2 lt32 torr (lt43 kPa) White blood cell count gt12000cellsmm3 lt4000 cellsmm3 or gt10immature (band) cells

Sepsis The presence of SIRS associated with a confirmed infectious process

Severe Sepsis Sepsis with either hypotension or systemic manifestations of hypoperfusionndash Lactic acidosis oliguria altered mental status

Septic Shock Sepsis with hypotension despite adequatefluid resuscitation associated with hypoperfusion abnormalities

bullHemodynamic AlterationsbullHyperdynamic State (ldquoWarm Shockrdquo)bullTachycardiabullElevated or normal cardiac outputbullDecreased systemic vascular resistance

bullHypodynamic State (ldquoCold Shockrdquo)bullLow cardiac output

Protein cactivation

bullCytokine production leads to massive production of endogenous vasodilators

bullStructural changes in the endothelium result in extravasation of intravascular fluid into interstitium and subsequent tissue edema

bullPlugging of select microvascular beds with neutrophils fibrin aggregates and microthrombi impair microvascular perfusion

bullOrgan-specific vasoconstriction

bullLoss of Sympathetic ResponsivenessbullDown-regulation of adrenergic receptor number and sensitivity possible altered signal transduction

bullVasodilatory Inflammatory MediatorsbullEndotoxin has direct vasodilatory

effectsbull Increased Nitric Oxide Production

Infection

InflammatoryMediators

Endothelial Dysfunction

Vasodilation

Hypotension Vasoconstriction Edema

Maldistribution of Microvascular Blood Flow

Organ Dysfunction

Microvascular Plugging

Ischemia

Cell Death

bullNormal compensation includesProgressive vasoconstriction Increased blood flow to major organs

Increased cardiac output Increased respiratory rate and volume

Decreased urine output

32

bull In shock the hydrostatic pressure decreases and the oncotic pressure is constant as a resultndash The fluid exchange from the capillary to the

extracellular space decreasesndash The fluid return from the extracellular space to

the capillary increasesThat will increase the blood volume which will

increase BP and will help to compensate shock situations

This system is known as the ldquoFluid shift systemrdquo

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 18: shock marker

COCO COCORASRASActivationActivation

RASRASActivationActivation

DyspneaDyspnea DyspneaDyspnea

OO22

supplysupply

OO22

supplysupply

VolumeVolumePreloadPreload

VolumeVolumePreloadPreload

SVRSVR SVRSVR

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedema

PeripheralPeripheralamp pulmonaryamp pulmonary

edemaedemaImpairedImpairedmyocardial functionmyocardial function

ImpairedImpairedmyocardial functionmyocardial function

MyocardialMyocardialOO22 demand demand

MyocardialMyocardialOO22 demand demand

CatecholamineCatecholamineReleaseRelease

CatecholamineCatecholamineReleaseRelease

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Vascular ToneVascular ToneVascular ToneVascular Tone

Massive VasodilationMassive VasodilationMassive VasodilationMassive Vasodilation

SVR amp PreloadSVR amp Preload SVR amp PreloadSVR amp Preload Cardiac OutputCardiac Output Cardiac OutputCardiac Output

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

Systemic Inflammatory Response Syndrome (SIRS) Systemic inflammatory response to a variety of severe clinical insults manifested by ge 2 of the following conditions Temperature gt38ordmC or lt36ordmC Heart rate gt90 beatsmin Respiratory rate gt20 breathsmin orPaCO2 lt32 torr (lt43 kPa) White blood cell count gt12000cellsmm3 lt4000 cellsmm3 or gt10immature (band) cells

Sepsis The presence of SIRS associated with a confirmed infectious process

Severe Sepsis Sepsis with either hypotension or systemic manifestations of hypoperfusionndash Lactic acidosis oliguria altered mental status

Septic Shock Sepsis with hypotension despite adequatefluid resuscitation associated with hypoperfusion abnormalities

bullHemodynamic AlterationsbullHyperdynamic State (ldquoWarm Shockrdquo)bullTachycardiabullElevated or normal cardiac outputbullDecreased systemic vascular resistance

bullHypodynamic State (ldquoCold Shockrdquo)bullLow cardiac output

Protein cactivation

bullCytokine production leads to massive production of endogenous vasodilators

bullStructural changes in the endothelium result in extravasation of intravascular fluid into interstitium and subsequent tissue edema

bullPlugging of select microvascular beds with neutrophils fibrin aggregates and microthrombi impair microvascular perfusion

bullOrgan-specific vasoconstriction

bullLoss of Sympathetic ResponsivenessbullDown-regulation of adrenergic receptor number and sensitivity possible altered signal transduction

bullVasodilatory Inflammatory MediatorsbullEndotoxin has direct vasodilatory

effectsbull Increased Nitric Oxide Production

Infection

InflammatoryMediators

Endothelial Dysfunction

Vasodilation

Hypotension Vasoconstriction Edema

Maldistribution of Microvascular Blood Flow

Organ Dysfunction

Microvascular Plugging

Ischemia

Cell Death

bullNormal compensation includesProgressive vasoconstriction Increased blood flow to major organs

Increased cardiac output Increased respiratory rate and volume

Decreased urine output

32

bull In shock the hydrostatic pressure decreases and the oncotic pressure is constant as a resultndash The fluid exchange from the capillary to the

extracellular space decreasesndash The fluid return from the extracellular space to

the capillary increasesThat will increase the blood volume which will

increase BP and will help to compensate shock situations

This system is known as the ldquoFluid shift systemrdquo

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 19: shock marker

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Sympathetic ToneSympathetic ToneOrOr

Parasympathetic ToneParasympathetic Tone

Vascular ToneVascular ToneVascular ToneVascular Tone

Massive VasodilationMassive VasodilationMassive VasodilationMassive Vasodilation

SVR amp PreloadSVR amp Preload SVR amp PreloadSVR amp Preload Cardiac OutputCardiac Output Cardiac OutputCardiac Output

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

Systemic Inflammatory Response Syndrome (SIRS) Systemic inflammatory response to a variety of severe clinical insults manifested by ge 2 of the following conditions Temperature gt38ordmC or lt36ordmC Heart rate gt90 beatsmin Respiratory rate gt20 breathsmin orPaCO2 lt32 torr (lt43 kPa) White blood cell count gt12000cellsmm3 lt4000 cellsmm3 or gt10immature (band) cells

Sepsis The presence of SIRS associated with a confirmed infectious process

Severe Sepsis Sepsis with either hypotension or systemic manifestations of hypoperfusionndash Lactic acidosis oliguria altered mental status

Septic Shock Sepsis with hypotension despite adequatefluid resuscitation associated with hypoperfusion abnormalities

bullHemodynamic AlterationsbullHyperdynamic State (ldquoWarm Shockrdquo)bullTachycardiabullElevated or normal cardiac outputbullDecreased systemic vascular resistance

bullHypodynamic State (ldquoCold Shockrdquo)bullLow cardiac output

Protein cactivation

bullCytokine production leads to massive production of endogenous vasodilators

bullStructural changes in the endothelium result in extravasation of intravascular fluid into interstitium and subsequent tissue edema

bullPlugging of select microvascular beds with neutrophils fibrin aggregates and microthrombi impair microvascular perfusion

bullOrgan-specific vasoconstriction

bullLoss of Sympathetic ResponsivenessbullDown-regulation of adrenergic receptor number and sensitivity possible altered signal transduction

bullVasodilatory Inflammatory MediatorsbullEndotoxin has direct vasodilatory

effectsbull Increased Nitric Oxide Production

Infection

InflammatoryMediators

Endothelial Dysfunction

Vasodilation

Hypotension Vasoconstriction Edema

Maldistribution of Microvascular Blood Flow

Organ Dysfunction

Microvascular Plugging

Ischemia

Cell Death

bullNormal compensation includesProgressive vasoconstriction Increased blood flow to major organs

Increased cardiac output Increased respiratory rate and volume

Decreased urine output

32

bull In shock the hydrostatic pressure decreases and the oncotic pressure is constant as a resultndash The fluid exchange from the capillary to the

extracellular space decreasesndash The fluid return from the extracellular space to

the capillary increasesThat will increase the blood volume which will

increase BP and will help to compensate shock situations

This system is known as the ldquoFluid shift systemrdquo

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 20: shock marker

Systemic Inflammatory Response Syndrome (SIRS) Systemic inflammatory response to a variety of severe clinical insults manifested by ge 2 of the following conditions Temperature gt38ordmC or lt36ordmC Heart rate gt90 beatsmin Respiratory rate gt20 breathsmin orPaCO2 lt32 torr (lt43 kPa) White blood cell count gt12000cellsmm3 lt4000 cellsmm3 or gt10immature (band) cells

Sepsis The presence of SIRS associated with a confirmed infectious process

Severe Sepsis Sepsis with either hypotension or systemic manifestations of hypoperfusionndash Lactic acidosis oliguria altered mental status

Septic Shock Sepsis with hypotension despite adequatefluid resuscitation associated with hypoperfusion abnormalities

bullHemodynamic AlterationsbullHyperdynamic State (ldquoWarm Shockrdquo)bullTachycardiabullElevated or normal cardiac outputbullDecreased systemic vascular resistance

bullHypodynamic State (ldquoCold Shockrdquo)bullLow cardiac output

Protein cactivation

bullCytokine production leads to massive production of endogenous vasodilators

bullStructural changes in the endothelium result in extravasation of intravascular fluid into interstitium and subsequent tissue edema

bullPlugging of select microvascular beds with neutrophils fibrin aggregates and microthrombi impair microvascular perfusion

bullOrgan-specific vasoconstriction

bullLoss of Sympathetic ResponsivenessbullDown-regulation of adrenergic receptor number and sensitivity possible altered signal transduction

bullVasodilatory Inflammatory MediatorsbullEndotoxin has direct vasodilatory

effectsbull Increased Nitric Oxide Production

Infection

InflammatoryMediators

Endothelial Dysfunction

Vasodilation

Hypotension Vasoconstriction Edema

Maldistribution of Microvascular Blood Flow

Organ Dysfunction

Microvascular Plugging

Ischemia

Cell Death

bullNormal compensation includesProgressive vasoconstriction Increased blood flow to major organs

Increased cardiac output Increased respiratory rate and volume

Decreased urine output

32

bull In shock the hydrostatic pressure decreases and the oncotic pressure is constant as a resultndash The fluid exchange from the capillary to the

extracellular space decreasesndash The fluid return from the extracellular space to

the capillary increasesThat will increase the blood volume which will

increase BP and will help to compensate shock situations

This system is known as the ldquoFluid shift systemrdquo

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 21: shock marker

Sepsis The presence of SIRS associated with a confirmed infectious process

Severe Sepsis Sepsis with either hypotension or systemic manifestations of hypoperfusionndash Lactic acidosis oliguria altered mental status

Septic Shock Sepsis with hypotension despite adequatefluid resuscitation associated with hypoperfusion abnormalities

bullHemodynamic AlterationsbullHyperdynamic State (ldquoWarm Shockrdquo)bullTachycardiabullElevated or normal cardiac outputbullDecreased systemic vascular resistance

bullHypodynamic State (ldquoCold Shockrdquo)bullLow cardiac output

Protein cactivation

bullCytokine production leads to massive production of endogenous vasodilators

bullStructural changes in the endothelium result in extravasation of intravascular fluid into interstitium and subsequent tissue edema

bullPlugging of select microvascular beds with neutrophils fibrin aggregates and microthrombi impair microvascular perfusion

bullOrgan-specific vasoconstriction

bullLoss of Sympathetic ResponsivenessbullDown-regulation of adrenergic receptor number and sensitivity possible altered signal transduction

bullVasodilatory Inflammatory MediatorsbullEndotoxin has direct vasodilatory

effectsbull Increased Nitric Oxide Production

Infection

InflammatoryMediators

Endothelial Dysfunction

Vasodilation

Hypotension Vasoconstriction Edema

Maldistribution of Microvascular Blood Flow

Organ Dysfunction

Microvascular Plugging

Ischemia

Cell Death

bullNormal compensation includesProgressive vasoconstriction Increased blood flow to major organs

Increased cardiac output Increased respiratory rate and volume

Decreased urine output

32

bull In shock the hydrostatic pressure decreases and the oncotic pressure is constant as a resultndash The fluid exchange from the capillary to the

extracellular space decreasesndash The fluid return from the extracellular space to

the capillary increasesThat will increase the blood volume which will

increase BP and will help to compensate shock situations

This system is known as the ldquoFluid shift systemrdquo

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 22: shock marker

Severe Sepsis Sepsis with either hypotension or systemic manifestations of hypoperfusionndash Lactic acidosis oliguria altered mental status

Septic Shock Sepsis with hypotension despite adequatefluid resuscitation associated with hypoperfusion abnormalities

bullHemodynamic AlterationsbullHyperdynamic State (ldquoWarm Shockrdquo)bullTachycardiabullElevated or normal cardiac outputbullDecreased systemic vascular resistance

bullHypodynamic State (ldquoCold Shockrdquo)bullLow cardiac output

Protein cactivation

bullCytokine production leads to massive production of endogenous vasodilators

bullStructural changes in the endothelium result in extravasation of intravascular fluid into interstitium and subsequent tissue edema

bullPlugging of select microvascular beds with neutrophils fibrin aggregates and microthrombi impair microvascular perfusion

bullOrgan-specific vasoconstriction

bullLoss of Sympathetic ResponsivenessbullDown-regulation of adrenergic receptor number and sensitivity possible altered signal transduction

bullVasodilatory Inflammatory MediatorsbullEndotoxin has direct vasodilatory

effectsbull Increased Nitric Oxide Production

Infection

InflammatoryMediators

Endothelial Dysfunction

Vasodilation

Hypotension Vasoconstriction Edema

Maldistribution of Microvascular Blood Flow

Organ Dysfunction

Microvascular Plugging

Ischemia

Cell Death

bullNormal compensation includesProgressive vasoconstriction Increased blood flow to major organs

Increased cardiac output Increased respiratory rate and volume

Decreased urine output

32

bull In shock the hydrostatic pressure decreases and the oncotic pressure is constant as a resultndash The fluid exchange from the capillary to the

extracellular space decreasesndash The fluid return from the extracellular space to

the capillary increasesThat will increase the blood volume which will

increase BP and will help to compensate shock situations

This system is known as the ldquoFluid shift systemrdquo

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 23: shock marker

Septic Shock Sepsis with hypotension despite adequatefluid resuscitation associated with hypoperfusion abnormalities

bullHemodynamic AlterationsbullHyperdynamic State (ldquoWarm Shockrdquo)bullTachycardiabullElevated or normal cardiac outputbullDecreased systemic vascular resistance

bullHypodynamic State (ldquoCold Shockrdquo)bullLow cardiac output

Protein cactivation

bullCytokine production leads to massive production of endogenous vasodilators

bullStructural changes in the endothelium result in extravasation of intravascular fluid into interstitium and subsequent tissue edema

bullPlugging of select microvascular beds with neutrophils fibrin aggregates and microthrombi impair microvascular perfusion

bullOrgan-specific vasoconstriction

bullLoss of Sympathetic ResponsivenessbullDown-regulation of adrenergic receptor number and sensitivity possible altered signal transduction

bullVasodilatory Inflammatory MediatorsbullEndotoxin has direct vasodilatory

effectsbull Increased Nitric Oxide Production

Infection

InflammatoryMediators

Endothelial Dysfunction

Vasodilation

Hypotension Vasoconstriction Edema

Maldistribution of Microvascular Blood Flow

Organ Dysfunction

Microvascular Plugging

Ischemia

Cell Death

bullNormal compensation includesProgressive vasoconstriction Increased blood flow to major organs

Increased cardiac output Increased respiratory rate and volume

Decreased urine output

32

bull In shock the hydrostatic pressure decreases and the oncotic pressure is constant as a resultndash The fluid exchange from the capillary to the

extracellular space decreasesndash The fluid return from the extracellular space to

the capillary increasesThat will increase the blood volume which will

increase BP and will help to compensate shock situations

This system is known as the ldquoFluid shift systemrdquo

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 24: shock marker

bullHemodynamic AlterationsbullHyperdynamic State (ldquoWarm Shockrdquo)bullTachycardiabullElevated or normal cardiac outputbullDecreased systemic vascular resistance

bullHypodynamic State (ldquoCold Shockrdquo)bullLow cardiac output

Protein cactivation

bullCytokine production leads to massive production of endogenous vasodilators

bullStructural changes in the endothelium result in extravasation of intravascular fluid into interstitium and subsequent tissue edema

bullPlugging of select microvascular beds with neutrophils fibrin aggregates and microthrombi impair microvascular perfusion

bullOrgan-specific vasoconstriction

bullLoss of Sympathetic ResponsivenessbullDown-regulation of adrenergic receptor number and sensitivity possible altered signal transduction

bullVasodilatory Inflammatory MediatorsbullEndotoxin has direct vasodilatory

effectsbull Increased Nitric Oxide Production

Infection

InflammatoryMediators

Endothelial Dysfunction

Vasodilation

Hypotension Vasoconstriction Edema

Maldistribution of Microvascular Blood Flow

Organ Dysfunction

Microvascular Plugging

Ischemia

Cell Death

bullNormal compensation includesProgressive vasoconstriction Increased blood flow to major organs

Increased cardiac output Increased respiratory rate and volume

Decreased urine output

32

bull In shock the hydrostatic pressure decreases and the oncotic pressure is constant as a resultndash The fluid exchange from the capillary to the

extracellular space decreasesndash The fluid return from the extracellular space to

the capillary increasesThat will increase the blood volume which will

increase BP and will help to compensate shock situations

This system is known as the ldquoFluid shift systemrdquo

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 25: shock marker

Protein cactivation

bullCytokine production leads to massive production of endogenous vasodilators

bullStructural changes in the endothelium result in extravasation of intravascular fluid into interstitium and subsequent tissue edema

bullPlugging of select microvascular beds with neutrophils fibrin aggregates and microthrombi impair microvascular perfusion

bullOrgan-specific vasoconstriction

bullLoss of Sympathetic ResponsivenessbullDown-regulation of adrenergic receptor number and sensitivity possible altered signal transduction

bullVasodilatory Inflammatory MediatorsbullEndotoxin has direct vasodilatory

effectsbull Increased Nitric Oxide Production

Infection

InflammatoryMediators

Endothelial Dysfunction

Vasodilation

Hypotension Vasoconstriction Edema

Maldistribution of Microvascular Blood Flow

Organ Dysfunction

Microvascular Plugging

Ischemia

Cell Death

bullNormal compensation includesProgressive vasoconstriction Increased blood flow to major organs

Increased cardiac output Increased respiratory rate and volume

Decreased urine output

32

bull In shock the hydrostatic pressure decreases and the oncotic pressure is constant as a resultndash The fluid exchange from the capillary to the

extracellular space decreasesndash The fluid return from the extracellular space to

the capillary increasesThat will increase the blood volume which will

increase BP and will help to compensate shock situations

This system is known as the ldquoFluid shift systemrdquo

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 26: shock marker

bullCytokine production leads to massive production of endogenous vasodilators

bullStructural changes in the endothelium result in extravasation of intravascular fluid into interstitium and subsequent tissue edema

bullPlugging of select microvascular beds with neutrophils fibrin aggregates and microthrombi impair microvascular perfusion

bullOrgan-specific vasoconstriction

bullLoss of Sympathetic ResponsivenessbullDown-regulation of adrenergic receptor number and sensitivity possible altered signal transduction

bullVasodilatory Inflammatory MediatorsbullEndotoxin has direct vasodilatory

effectsbull Increased Nitric Oxide Production

Infection

InflammatoryMediators

Endothelial Dysfunction

Vasodilation

Hypotension Vasoconstriction Edema

Maldistribution of Microvascular Blood Flow

Organ Dysfunction

Microvascular Plugging

Ischemia

Cell Death

bullNormal compensation includesProgressive vasoconstriction Increased blood flow to major organs

Increased cardiac output Increased respiratory rate and volume

Decreased urine output

32

bull In shock the hydrostatic pressure decreases and the oncotic pressure is constant as a resultndash The fluid exchange from the capillary to the

extracellular space decreasesndash The fluid return from the extracellular space to

the capillary increasesThat will increase the blood volume which will

increase BP and will help to compensate shock situations

This system is known as the ldquoFluid shift systemrdquo

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 27: shock marker

bullPlugging of select microvascular beds with neutrophils fibrin aggregates and microthrombi impair microvascular perfusion

bullOrgan-specific vasoconstriction

bullLoss of Sympathetic ResponsivenessbullDown-regulation of adrenergic receptor number and sensitivity possible altered signal transduction

bullVasodilatory Inflammatory MediatorsbullEndotoxin has direct vasodilatory

effectsbull Increased Nitric Oxide Production

Infection

InflammatoryMediators

Endothelial Dysfunction

Vasodilation

Hypotension Vasoconstriction Edema

Maldistribution of Microvascular Blood Flow

Organ Dysfunction

Microvascular Plugging

Ischemia

Cell Death

bullNormal compensation includesProgressive vasoconstriction Increased blood flow to major organs

Increased cardiac output Increased respiratory rate and volume

Decreased urine output

32

bull In shock the hydrostatic pressure decreases and the oncotic pressure is constant as a resultndash The fluid exchange from the capillary to the

extracellular space decreasesndash The fluid return from the extracellular space to

the capillary increasesThat will increase the blood volume which will

increase BP and will help to compensate shock situations

This system is known as the ldquoFluid shift systemrdquo

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 28: shock marker

bullLoss of Sympathetic ResponsivenessbullDown-regulation of adrenergic receptor number and sensitivity possible altered signal transduction

bullVasodilatory Inflammatory MediatorsbullEndotoxin has direct vasodilatory

effectsbull Increased Nitric Oxide Production

Infection

InflammatoryMediators

Endothelial Dysfunction

Vasodilation

Hypotension Vasoconstriction Edema

Maldistribution of Microvascular Blood Flow

Organ Dysfunction

Microvascular Plugging

Ischemia

Cell Death

bullNormal compensation includesProgressive vasoconstriction Increased blood flow to major organs

Increased cardiac output Increased respiratory rate and volume

Decreased urine output

32

bull In shock the hydrostatic pressure decreases and the oncotic pressure is constant as a resultndash The fluid exchange from the capillary to the

extracellular space decreasesndash The fluid return from the extracellular space to

the capillary increasesThat will increase the blood volume which will

increase BP and will help to compensate shock situations

This system is known as the ldquoFluid shift systemrdquo

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 29: shock marker

Infection

InflammatoryMediators

Endothelial Dysfunction

Vasodilation

Hypotension Vasoconstriction Edema

Maldistribution of Microvascular Blood Flow

Organ Dysfunction

Microvascular Plugging

Ischemia

Cell Death

bullNormal compensation includesProgressive vasoconstriction Increased blood flow to major organs

Increased cardiac output Increased respiratory rate and volume

Decreased urine output

32

bull In shock the hydrostatic pressure decreases and the oncotic pressure is constant as a resultndash The fluid exchange from the capillary to the

extracellular space decreasesndash The fluid return from the extracellular space to

the capillary increasesThat will increase the blood volume which will

increase BP and will help to compensate shock situations

This system is known as the ldquoFluid shift systemrdquo

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 30: shock marker

bullNormal compensation includesProgressive vasoconstriction Increased blood flow to major organs

Increased cardiac output Increased respiratory rate and volume

Decreased urine output

32

bull In shock the hydrostatic pressure decreases and the oncotic pressure is constant as a resultndash The fluid exchange from the capillary to the

extracellular space decreasesndash The fluid return from the extracellular space to

the capillary increasesThat will increase the blood volume which will

increase BP and will help to compensate shock situations

This system is known as the ldquoFluid shift systemrdquo

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 31: shock marker

32

bull In shock the hydrostatic pressure decreases and the oncotic pressure is constant as a resultndash The fluid exchange from the capillary to the

extracellular space decreasesndash The fluid return from the extracellular space to

the capillary increasesThat will increase the blood volume which will

increase BP and will help to compensate shock situations

This system is known as the ldquoFluid shift systemrdquo

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 32: shock marker

Cellular Response to Shock

TissueTissueperfusionperfusion

TissueTissueperfusionperfusion

NaNa++ Pump PumpFunctionFunction

NaNa++ Pump PumpFunctionFunction

ATPATPsynthesissynthesis

ATPATPsynthesissynthesis

AnaerobicAnaerobicmetabolismmetabolism

AnaerobicAnaerobicmetabolismmetabolism

Cellular edemaCellular edema Vascular volumeVascular volume

Cellular edemaCellular edema Vascular volumeVascular volume

Impaired cellularImpaired cellularmetabolismmetabolism

Impaired cellularImpaired cellularmetabolismmetabolism

OO22

useuse

OO22

useuse

Intracellular NaIntracellular Na++

amp wateramp water

Intracellular NaIntracellular Na++

amp wateramp water

Impaired Impaired glucose glucose usageusage

Impaired Impaired glucose glucose usageusage

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

Stimulation of Stimulation of clotting cascade amp clotting cascade amp

inflammatoryinflammatoryresponseresponse

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 33: shock marker

pyruvate + NADH + H+ = lactate + NAD+

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 34: shock marker

=Accelerated aerobic glycolysis =Carbohydrate metabolism gt mitochondrial oxidative capacity Hypoxia blocks oxidative phosphoeration =Increase the lactate pyruvate ratio =Normal ratio around 101

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 35: shock marker

bull Reduced lactate clerance bull Puruvate dehydrogenase

Dysfunction bull PDH shifts Pyruvate to Krebs cycle

not lactate Subnormal level in muscle in sepsis

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 36: shock marker

bull Protien catabolism bull Aas converted to Puruvate then

lactate bull in hibition of mitochondrial

respiration sepsis drugs

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 37: shock marker

bullGluconeogenesis 20 - Cori cycle in liver

bullOxidation 80

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 38: shock marker

Lactate

Serum Lactate as a Predictor of Mortality in Emergency Department Patients With Infection Annals of Emergency Medicine 200545524-528

=An initial serum lactate may be useful in risk stratification in patients presenting to the emergency department with infections

= There appears to be an increasing trend of mortality with elevated initial lactate levels 224 patients with an initial lactate level gt 40 mmolL died within 3 days

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 39: shock marker

Lactate levels greater than 25 mmolL are associated with an increase in mortalityLevels greater than 4 mmolL in patients with suspected infection have been shown to increase mortality odds 5-fold

Ann Emerg Med May 200545(5)524-8

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 40: shock marker

Intensive Care Med 20012774-83 Abstract

Elevated serum lactate levels are predictive of an increased mortality in ED patients with sepsis or septic shock Current evidence indicates that monitoring serial values and determining the time to clearance is a strong predictor of patient outcome

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 41: shock marker

=decline in lactate levels of at least 10 during the first 6 hours of therapy correlated with a mortality rate of lt 20

= normalization of serum lactate levels within 12-24 hours is associated with the best chance of patient survival

= Patients whose lactate levels do not return to normal within 48 hours have significantly higher rates of organ dysfunction and death

Emerg Med J 200623622-624

Am J Surg 2006191625-630

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 42: shock marker

Protein C

Baseline protein C levels were an independent predictor of sepsis outcome Day 1 changes in protein C regardless of baseline levels were also predictive of outcome The association of DrotAA treatment increased protein C levels and improved survival may partially explain the mechanism of action

Critical Care 2006 10R92doi101186cc4946

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 43: shock marker

Procalcitonin

]Procalcitonin (PCT) has been proposed as a more specific [and better prognostic marker than CRP although its value has also been challenged It remains difficult to differentiate sepsis from other non-infectious causes of systemic inflammatory response syndrome and there is a continuous search for better biomarkers of sepsis

J Crit Care 2004 19152-157

Lancet Infect Dis 2007

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 44: shock marker

base deficit has shown poor correlation with serum lactate and is affected by numerous conditions including crystalloid resuscitation As a result base deficit should not be considered a reliable surrogate for serum lactate

J Trauma 200457898-912

Base Defecit

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 45: shock marker

BNPHigh concentrations of natriuretic peptides were observed in severe sepsis septic shock and in multiple organ failure probably due to increased secretion by mediators of the inflammatory processThe highest concentrations of ANP and BNP were found in lethal conditions

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 46: shock marker

Therefore the assessment of natriuretic peptide may be used in scoring a patients clinical status for precise diagnosis in doubtful situations and for determining appropriate treatment

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 47: shock marker

=D dimmers are grossly elevated in sepsis = Protein C are lowered = Procalcitonin also considered as bimarker for sepsis The potential role of biomarkers for diagnosis of infection in patients presenting with severe sepsis remains undefined have failed to accurately differentiate sepsis from similar critical illnesses

Am J Med 2003 115529-535

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 48: shock marker

Take home massege

= Cellular response to shock is reflected as clinical manifestation =Lactate is the most important biochemical markers of shock supported by evedience = other markers has aconflicted evdiences that need to be validated

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 49: shock marker

OBJECTIVES To determine and compare the respective concentrations of tumor necrosis factor (TNF)-alpha interleukin (IL)-6 soluble TNF receptors nitritenitrate (NO2-NO3-) and procalcitonin in the plasma of patients with septic shock

CONCLUSIONS These observations showed that increase of proinflammatory cytokines was a consequence of inflammation not of shock In this study comparing various shock and infectious states measurements of NO2-NO3- concentration and procalcitonin concentration represented the most suitable tests for defining patients with septic shock

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock
Page 50: shock marker

63

Symptoms of shock

3 Cold and clammy skin As a result of vasoconstrictionbull Shock decreases the skin surface temperature as a result of

vasodilatation which will increase the internal body temperature Because the skin plays a major role in controlling body temperature as it will help in exchanging heat with the external environment

bull There are two mechanisms to get red of the excess heat1 Hyperventilation ( Minimal effect in humans)2 Vasodilatation of the vessels Flush ( Increase blood flow to the skin)

BP Real shock

  • Slide 1
  • Outline
  • Definition
  • Aerobic Metabolism
  • Anaerobic Metabolism
  • Responses to shock
  • Changes in afterload amp preload
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Renin ndash Angiotensin-Aldosterone
  • Renin ndash Angiotensin-Aldosterone
  • Cardiogenic shock
  • Neurogenic shock
  • SEPTIC SHOCK
  • Slide 22
  • Slide 23
  • Slide 24
  • Clinical Signs of Septic shock
  • Slide 26
  • Pathophysiology of Sepsis induced Ischemic Organ
  • Slide 28
  • Pathogenesis of vasodilation in sepsis
  • Slide 30
  • Slide 31
  • The compansatory system
  • Cellular Response to Shock
  • Slide 34
  • Slide 35
  • Slide 36
  • Slide 37
  • Slide 38
  • Hypoperfusion amp Lactate
  • Slide 40
  • Slide 41
  • What Happen to Lactate
  • Slide 43
  • Lactate
  • Slide 45
  • Slide 46
  • Slide 47
  • Hypoglycemia in shock
  • Slide 49
  • Slide 50
  • Slide 51
  • Protein C
  • Procalcitonin
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
  • Slide 61
  • Slide 62
  • Symptoms of shock