pathophysiology of adrenal insufficiency insufficiency...

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Maureen Maloney-Poldek MSN, RN Chamberlain College of Nursing Pathophysiology of sepsis and septic shock How sepsis affects the endocrine system Pathophysiology of adrenal insufficiency Clinical manifestations of relative adrenal insufficiency History of treatment for relative adrenal insufficiency, use of corticosteroids and the cosyntropin stim test Current treatment of adrenal insufficiency Pathophysiology and clinical manifestations of hyperglycemia Treatment of hyperglycemia and how insulin protocols have changed and why SIRS Temperature >100.4 ˚F (38 ˚C) or < 96.8 ˚F (36 ˚C) RR > 20 breaths/min Heart Rate > 90 beats/min WBCs > 12,000 or < 4, 000 or > 10% bands PaCO 2 < 32 mmHg Sepsis SIRS + presence of a confirmed or suspected infection Severe Sepsis Sepsis + Signs of end organ damage Hypotension Lactate level > 4 mmol Septic Shock Severe sepsis with persistent hypotension Signs of end organ damage Lactate level > 4 mmol (Dellinger et al., 2013) Sepsis Ladder Inflammation Inflammation Inflammation Inflammation

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Maureen Maloney-Poldek MSN, RN Chamberlain College of Nursing

� Pathophysiology of sepsis and septic shock� How sepsis affects the endocrine system� Pathophysiology of adrenal insufficiency� Clinical manifestations of relative adrenal

insufficiency� History of treatment for relative adrenal insufficiency,

use of corticosteroids and the cosyntropin stim test� Current treatment of adrenal insufficiency� Pathophysiology and clinical manifestations of

hyperglycemia� Treatment of hyperglycemia and how insulin

protocols have changed and why

SIRS

Temperature

>100.4 ˚F (38 ˚C) or <

96.8 ˚F (36 ˚C)RR

> 20 breaths/min

Heart Rate

> 90 beats/min

WBCs

> 12,000 or < 4, 000 or >

10% bandsPaCO2

< 32 mmHg

Sepsis

SIRS + presence of a confirmed or suspected infection

Severe Sepsis

Sepsis + Signs of end organ

damageHypotension

Lactate level > 4 mmol

Septic Shock

Severe sepsis with persistent hypotension

Signs of end organ damage

Lactate level > 4 mmol

(Dellinger et al., 2013)

Sepsis Ladder

InflammationInflammationInflammationInflammation

� Inflammation

� Vasodilation

▪ Decreases afterload

� Increased capillary permeability

▪ Decreases preload

� Activation of the clotting cascade

� ↓Oxygenation

B/P and CO

(Sole, Klein, & Moseley, 2013) (Sole, Klein, & Moseley, 2013)

� How does sepsis effect the endocrine system?

(Sole, Klein, & Moseley, 2013)

(Lewis et al., 2011).(Sole, Klein, & Moseley, 2013)

� Inflammation from sepsis suppresses the HPA axis altering the feedback loop

� Resistance to steroids related to altered

feedback loop

� Thrombotic necrosis of the adrenal gland

(Sole, Klein, & Moseley, 2013)

� Circulatory collapse

� Refractory hypotension

� Tachycardia

� Dehydration

� Fever

� A/N/V/D/abdominal pain

� Fatigue and muscle weakness

Very vague in critically ill patients!!!

(Whiteman, 2009)

� Baseline cortisol level, cosyntropin administration and repeat cortisol level

(Whiteman, 2009)

� No longer recommended to assess for

relative adrenal insufficiency

(Dellinger et al., 2013)

� Why steroids?� Originally thought to reduce inflammation

� Currently– treats relative adrenal insufficiency

� History of steroid use in sepsis� High doses increased mortality rate (Bone et al., 1987)

� Low doses improved mortality rates (Annane et al., 2002)

� CORTICUS –reduction in organ failure rates but not mortality (Moreno et al., 2011)

� Patients with refractory hypotension despite vasopressor administration

� Recommend a dose of 200 mg/day

� Recommend a continuous infusion

(Dellinger et al., 2013)

� Can occur in critically ill patients without a history of diabetes

� Due to increased stress response

� Can lead to complications

� Abnormal immune function

� ↑ Infection rates

� Hemodynamic instability

� Dysrhythmias

(Schiffner, 2014)

� What is a normal blood glucose?

� What should the target blood glucose be?

� Blood glucose goal of < 180 mg/dL� Van Den Berghe et al., (2001)

� 80-110 mg/dL

� Used to be <150 mg/dL (2008 guidelines)

� NICE SUGAR Trial

▪ Hypoglycemia = ↑mortality rates

(NICE SUGAR TRIAL, 2008, Dellinger et al., 2008 & Dellinger et al., 2013)

� Treat two consecutive BG readings of > 180 mg/dL

� Insulin infusion goal BG of < 180 mg/dL

� Monitor BG every 1-2 hrs until stable, then

every 4 hours

� Caution with Point of care testing

(Dellinger et al., 2013 & Kleinpell, Aitken, & Schorr, 2013)

� Nurse controlled protocols

� Safe

� Better target outcomes

(Kleinpell, Aitken, & Schorr, 2013)

Case Study� G.S. is a 46 year-old female with a past

medical history of HTN and an acute

appendicitis. She developed septic shock

after her appendix ruptured…

� She is currently intubated, ventilated and sedated and receiving antibiotics.

� After receiving multiple fluid boluses, she also

has a continuous infusion of norepinephrine

at 20 mcg/min and vasopressin of 0.03

units/min� Despite this, her MAP is at 65mmHg

� Is she a candidate for corticosteroids?

� Yes

� She has received multiple fluid boluses to correct

volume loss and she is currently on multiple

pressors for a MAP of 65mmHg

� What is the recommended daily dose?

� Her morning blood glucose is 200 mg/dL and her afternoon blood glucose is 192 mg/dL

� What should the nurse anticipate?

� An insulin infusion is started, what is the target glucose level?

� How should the insulin infusion be managed?

� G.S. is started on hydrocortisone at 200 mg/day and an insulin infusion

� Gradually, she was weaned off

norepinephrine and vasopressin

� Eventually she was weaned off mechanical

ventilation and extubated

� She eventually made a complete recovery

The End

Annane, D., Sebille, V., Charpentier, C., Bollaert, P.E., Francois, B., Korach, J.M., …Bellissant, E. (2002). Effect of treatment with low doses of hydrocortisone and fludrocortisone on mortality in patients with septic shock. Journal of the American Medical Association 288(7) 862-871.

Bone, R.C., Fishers, C. J., Clemmer, T. P., Slotman, G.J. , Metz. C.A., & Balk, R.A. (1987). A controlled clinical trial of high-dose methylprednisolone in the treatment of severe sepsis and septic shock. The New England Journal of Medicine 317(11), 653-658.

Dellinger, R.P. et al. (2013). Surviving sepsis campaign: International guidelines for management of severe sepsis and septic shock: 2012. Critical Care Medicine 41(2), 580-637.

Dellinger, R.P. et al. (2008). Surviving sepsis campaign: International guidelines for the management of severe sepsis and septic shock: 2008. Critical Care Medicine 36(1), 296-327.

Kleinpell, R., Aitken, L. & Schorr, C. (2013). Implications of the new international sepsis guidelines for nursing care. American Journal of Critical Care 22(3), 212-222.

Lewis, S. L., Dirksen, S. R., Heitkemper, M. M., & Bucher, L. (2014). Medical surgical nursing: Assessment and management of clinical problems (9th ed.). St. Louis, MO: Mosby Elsevier

Moreno, R., Sprung, C.L., Annane, D., Chevret, S. Briegel, J., Keh, D., …Vincent, J.L. (2011). Time course of organ failure in patients with septic shock treated with corticosteroids: Results of the corticus study. Intensive Care Medicine 37(11) 1765-1772.

The NICE-SUGAR Study Investigators. (2009). Intensive versus conventional glucose control in critically ill patients. The New England Journal of Medicine 360(13), 1283-1297.

Schiffner, L. (2014). Glucose management in critically ill medical and surgical patients. Dimensions of Critical Care Nursing 33(2), 70-77.

Sole, M.L. , Klein, D.G., & Moseley, M.J. (2013). Introduction to critical care nursing (6th ed.). St. Louis: MO, Elsevier.

Van Den Berghe, G., Wouters, P., Weekers, F., Verwaest, C., Bruyninckx, F., Schetz, M. … Bouillon, R. (2001). Intensive insulin therapy in

critically ill patients. The New England Journal of Medicine 345(19),

1359-1367. Whiteman, K. (2009). ACTH stimulation: Testing the adrenals. Nursing 2009

Critical Care 4(1), 56.