shock marker
TRANSCRIPT
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
=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
-
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
-
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
-
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
-
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
-
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
-
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
-
=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
-
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
-
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
-
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
-
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
-
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
-
=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
-
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
-
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
-
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
-