• E Kilger, J Heyn, A Beiras-Fernandez, B Luchting, and F Weis.
• Department of Anesthesiology, Grosshadern, University Hospital Munich, Munich, Germany.
• Minerva Anestesiol. 2011 Mar 1;77(3):268-74.

BackgroundSystemic inflammatory response occurs after cardiac surgery (CS) and leads to a worse outcome in many cases. Stress doses of hydrocortisone have been successfully used to reduce SIRS and to improve outcome of patients after CS with cardiopulmonary bypass grafting (on-pump CABG), but the effect of hydrocortisone on patients undergoing CS without cardiopulmonary bypass grafting (off-pump CABG) is unclear. Therefore, we evaluated the effect of stress doses of hydrocortisone in this group of patients.MethodsA total of 305 patients undergoing off-pump CABG were enrolled in a prospective randomized trial according to the study protocol. The patients either received stress doses of hydrocortisone or placebo. We measured various laboratory and clinical variables characterizing the patients' outcomes.ResultsThe two study groups did not differ with regard to demographic data. Patients receiving hydrocortisone had an increased Higgins score and a decreased ejection fraction. Furthermore, patients from the hydrocortisone group had significantly lower levels of IL-6 (275 [162/677] pg/mL vs. 450 [320/660] pg/mL, P=0.001) and a shorter stay in the ICU (1 [1/3] day vs. 2 [2/3] days, P=0.04). Both groups did not differ in regard to catecholamine support, duration of mechanical ventilation, incidence of postoperative atrial fibrillation, blood loss, and mortality rate.ConclusionWe conclude that intravenous stress doses of hydrocortisone lead to a reduction of systemic inflammation and to a potential improvement in the early outcome of patients undergoing off-pump CABG.

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