Assessing Adrenal Function in Ill, Hospitalized Patients. Bruce Redmon, MD Division of Endocrinology, Diabetes and Metabolism
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1 Assessing Adrenal Function in Ill, Hospitalized Patients Bruce Redmon, MD Division of Endocrinology, Diabetes and Metabolism
2 Disclosures Very surprised when I received an two weeks ago disclosing I was speaker today. No conflicts or financial interests.
3 Endocrine Diagnosis Symptoms Signs Hormone assessment
4 Outline Normal physiology and response to stress. Evaluation of patients for adrenal insufficiency. Patients on exogenous glucocorticoids. Critically ill patients.
5 Hypothalmus CRH Pituitary _ + Stress - hypotension - fever - trauma/surgery - hypoglycemia ACTH Cortisol Adrenal Cortex
6 Cortisol Levels in Acutely Ill Patients Serum cortisol ug/dl GI bleed Acute MI Respiratory failure Sepsis Shock
7 Glucocorticoid Physiology Excess Deficiency Metabolic Hyperglycemia, protein Hypoglycemia breakdown, lipolysis Cardiovascular HTN Hypotension GI Incr appetite, wt gain Anorexia, wt loss, N/V Musculoskeletal Muscle atrophy, bone Weakness loss Hematopoietic Immune suppression Anemia Nervous system Depression, psychosis, mood change Lethargy, apathy
8 24 Hr Cortisol Levels in Healthy People Weitzman JCEM 1971
9 Speckart Arch IM 1971 Cosyntropin Stimulation Test
10 Cosyntropin Low Dose or High Dose 18 ug/dl Tordkman JCEM 1995
11 Patients on Exogenous Steroids
12 Relative Potency Steroid Equivalent Dose (mg) Hydrocortisone Prednisone Dexamethasone 0.5-1
13 Graber, JCE Recovery of the H-P-A Axis
14 Predicting Adrenal Suppression
15 Cortisol Response to CRH Patients on GC Therapy
16 Predicting Response No correlation of cortisol response to dose, duration or cumulative dose of GC ~ 25% on < 10 mg prednisone had no response; ~ 25% on > 25 mg had normal response. ~ 25% with 1-8 weeks exposure had no response; 30% with > 100 weeks had normal response. Predict response to CRH based on basal cortisol level only about 60% patients.
17 Exogenous GC at dose equivalent of prednisone 7.5 mg a day for 1 3 weeks may result in adrenal suppression.
18 Stress Dose Steroids?
19 Annals Int Med, 1953
20 N = 40 renal Tx recipients on immunosuppressive prednisone (5-10 mg/day). Admitted for infections, DKA, PE, surgery, etc. No stress dose steroids. No mortality, no incr length of stay, unexplained hypotension, other untoward events. ~ 60% with abnormal stim test
21 Hospitalized Patients on Exogenous Glucocorticoids Patients with Addison s disease or known pituitary disease. Rare. Reasonable to temporarily increase GC (i.e., stress dose) in absence of data to the contrary.
22 Non-Critically Ill Patients on Exogenous Glucocorticoids Patients on chronic GC for other therapeutic reasons. Stress dose steroids usually not necessary. Adrenal stimulation tests usually not necessary. If done, 250 ug cosyntropin test is probably good enough. A peak cortisol around 18 ug/dl is adequate. Can usually be managed with clinical judgment.
23 Critically Ill Patients
24 Hypothalmus CRH Pituitary _ + Stress - hypotension - fever - trauma/surgery - hypoglycemia ACTH Cortisol Adrenal Cortex
25 Jurney Chest 1987 Serum Cortisol and Mortality
26 _ Hypothalmus + Stress/cytokines Drugs (e.g. opiates) CRH Pituitary ACTH _ Cortisol CBG-Cortisol Albumin-Cortisol 90% _ Hemorrhage Adrenal Cortex Drugs (eg,ketoconazole, etomidate) Free-Cortisol 10%
27 Total and Free Cortisol ICU Patients Hamrahian, NEJM 2004
28 Critical Illness Related Corticosteroid Insufficiency (CIRCI) Inadequate cellular corticosteroid activity for the severity of illness. Inadequate GC production. GC resistance at the cellular level. Reversible. Diagnosis problematic Non-standard criteria Random cortisol < 10 ug/dl or cortisol < 9 ug/dl
29 Role of GC Therapy in CIRCI Unclear. Two major RCT with mortality endpoint - conflicting results.
30 Annane, et al, JAMA ICU patients in septic shock. HC 200 mg/fludrocortisone 50 ug daily vs placebo. 250 ug cosyntropin stim test. Primary outcome 28 day mortality in nonresponders ( cortisol < 9 ug/dl).
31 Mortality Rates 100 Mortality Day 28 (%) * P = Placebo Steroids 0 Nonresponders Responders All 76% 24%
32 CORTICUS TRIAL NEJM, ICU patients in septic shock. HC 200 mg daily vs placebo. 250 ug cosyntropin stim test. Primary outcome 28 day mortality in nonresponders.
33 Mortality Rates 100 Mortality Day 28 (%) Placebo Steroids 0 Nonresponders Responders All 48% 51%
34 Role of GC Therapy in CIRCI Current recommendations (Surviving Sepsis Campaign, Amer College Critical Care Medicine) Septic shock not responding to fluids/pressors. GC replacement ~ 200 mg/day. Quality of evidence moderate/low; strength of recommendation - weak.
35 Patients with Liver Disease
36 The Hepato-Adrenal Syndrome High prevalence of adrenal insufficiency reported in patients with liver failure. 30% - 60% - acute liver failure, cirrhosis/sepsis, stable liver disease. Potential for large confounding due to effects of liver disease on protein levels.
37 Prevalence of Adrenal Insufficiency % AI Any criteria 58% Std 39% CIRCI 47% Free cortisol 12% Tan, J Hepat, 2010
38 Hydrocortisone and Septic Shock Outcome in Cirrhosis Arabi CMAJ 2010
39 Why Not Treat?
40
41 Potential Adverse Effects of Stress Dose Steroids Hyperglycemia Infection Myopathy GI bleeding Adrenal suppression
42 Conclusions Signs/symptoms consistent with adrenal insufficiency are not uncommon in ill, hospitalized patients. Standard criteria for diagnosing adrenal insufficiency in the outpatient setting may not be valid in hospitalized patients, particularly severely ill patients. For patients on exogenous steroids for immunosuppression, adrenal suppression is expected. However, stress dose steroids are often not necessary during hospitalizations.
43 Conclusions Adrenal hemorrhage is a rare but life threatening cause of adrenal insufficiency in the hospital setting. Use of stress dose steroids in septic patients has not been clearly shown to be of benefit, particularly in patients with liver disease. The potential for stress dose steroids to cause harm must be weighed against possible benefits.
44
45
46 Endocrinology
47
48 Basal Cortisol Predicts Stimulated Level 18 ug/dl
49 Cushing s Signs and Symptoms
50 Cortisol Response after Cosyntropin vs Hypoglycemia 18 ug/dl Lindholm, JCEM, 1978
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