OBJECTIVE: To identify the incidence of secondary adrenal insufficiency in severe sepsis. DESIGN: Prospective clinical trial testing 100 patients with a 250-microg adrenocorticotropic hormone (ACTH) stimulation test. SETTING: County-university teaching hospital. PATIENTS: One hundred patients with sepsis and septic shock. Forty patients had bacteremia and 17% shock. INTERVENTIONS: ACTH, cortisol, aldosterone, and electrolyte concentrations were measured at baseline. Cortisol and aldosterone were measured 30 and 60 mins after ACTH (250 microg). MEASUREMENTS AND MAIN RESULTS: Nine of the 100 patients (9%) failed the ACTH stimulation test (all serum cortisol <20 microg/dL). The 91 patients with sepsis began with a serum cortisol at 29.3 +/- 2.5, and it increased to 40.1 +/- 2.6 and 46.9 +/- 2.7 microg/dL at times 30 and 60 mins, respectively. Serum cortisol in nine septic patients who failed the ACTH stimulation test had an initial concentration of 11.3 +/- 1.8 microg/dL, and it increased at time 30 mins to 14.0 +/- 1.9 microg/dL and at 60 mins to 15.7 +/- 1.8 microg/dL. Four of the nine patients had secondary adrenal insufficiency as determined by a normal aldosterone response to ACTH. The remaining five patients had an absent aldosterone response to ACTH and baseline ACTH concentrations that were not elevated, suggesting adrenal dysfunction. Serum sodium (128 +/- 4 vs. 138 +/- 1 mmol/L, p <.05) and glucose concentrations (121 +/- 20 vs. 163 +/- 11 mg/dL, p <.05) were reduced in the nine patients. Of the four patients with secondary adrenal insufficiency, two had a history of amenorrhea after birth of their children many years earlier. CONCLUSIONS: These data demonstrate that 9% of adults with sepsis fail the ACTH stimulation test due to a mixture of etiologies. A reduced sodium or glucose concentration may be helpful in identifying glucocorticoid (adrenal) insufficiency in patients with sepsis.
OBJECTIVE: To identify the incidence of secondary adrenal insufficiency in severe sepsis. DESIGN: Prospective clinical trial testing 100 patients with a 250-microg adrenocorticotropic hormone (ACTH) stimulation test. SETTING: County-university teaching hospital. PATIENTS: One hundred patients with sepsis and septic shock. Forty patients had bacteremia and 17% shock. INTERVENTIONS:ACTH, cortisol, aldosterone, and electrolyte concentrations were measured at baseline. Cortisol and aldosterone were measured 30 and 60 mins after ACTH (250 microg). MEASUREMENTS AND MAIN RESULTS: Nine of the 100 patients (9%) failed the ACTH stimulation test (all serum cortisol <20 microg/dL). The 91 patients with sepsis began with a serum cortisol at 29.3 +/- 2.5, and it increased to 40.1 +/- 2.6 and 46.9 +/- 2.7 microg/dL at times 30 and 60 mins, respectively. Serum cortisol in nine septicpatients who failed the ACTH stimulation test had an initial concentration of 11.3 +/- 1.8 microg/dL, and it increased at time 30 mins to 14.0 +/- 1.9 microg/dL and at 60 mins to 15.7 +/- 1.8 microg/dL. Four of the nine patients had secondary adrenal insufficiency as determined by a normal aldosterone response to ACTH. The remaining five patients had an absent aldosterone response to ACTH and baseline ACTH concentrations that were not elevated, suggesting adrenal dysfunction. Serum sodium (128 +/- 4 vs. 138 +/- 1 mmol/L, p <.05) and glucose concentrations (121 +/- 20 vs. 163 +/- 11 mg/dL, p <.05) were reduced in the nine patients. Of the four patients with secondary adrenal insufficiency, two had a history of amenorrhea after birth of their children many years earlier. CONCLUSIONS: These data demonstrate that 9% of adults with sepsis fail the ACTH stimulation test due to a mixture of etiologies. A reduced sodium or glucose concentration may be helpful in identifying glucocorticoid (adrenal) insufficiency in patients with sepsis.
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