• So Yeon Lim, Yong Soo Kwon, Maeng Real Park, Seo Goo Han, Kyeongman Jeon, Sang-Won Um, Won-Jung Koh, Man Pyo Chung, Hojoong Kim, KwonO JungOJ, and Gee Young Suh.
• Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
• Shock. 2011 Oct 1; 36 (4): 345-9.

AbstractThe purpose of this study was to evaluate the prognostic significance of classification of patients with septic shock into different critical illness-related corticosteroid insufficiency subgroups. A retrospective observational study was conducted in patients with septic shock who underwent a short corticotropin stimulation test within 72 h of the onset of shock. Patients were classified into normal adrenal function (NOM), low basal cortisol (LBC) (basal cortisol, <10 μg/dL), or low Δ cortisol (LDC) (basal cortisol, ≥10 μg/dL; cortisol, <9 μg/dL) groups. A total of 168 septic shock patients were recruited. Forty-two patients (25%) were assigned to the NOM group, 39 (23.2%) to the LBC group, and 87 (51.8%) to the LDC group. All of the patients received hydrocortisone therapy. Patients in the LDC group had significantly higher Simplified Acute Physiology Score 3 (P < 0.001) and Sequential Organ Failure Assessment score (P < 0.001) than did patients in the NOM group. The 28-day mortalities of the NOM, LBC, and LDC groups were 40.5%, 38.5%, and 63.2%, respectively (P = 0.007). Classification into the LDC group significantly increased the odds of 28-day mortality (odds ratio, 2.717; 95% confidence interval, 1.452-5.082; P = 0.002) and remained an independent risk factor for mortality even after controlling for all the other potential risk factors identified (odds ratio, 3.638; 95% confidence interval, 1.418-9.028; P = 0.006). Classification into the LDC group is an independent risk factor for mortality in hydrocortisone-treated septic shock patients.

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