High-Dose Methylprednisolone Has No Benefit Over Moderate Dose for the Correction of Tetralogy of Fallot

Background. The optimal dose of methylprednisolone during pediatric open heart surgical procedures is unknown. This study compared the antiinflammatory and cardioprotective effects of high and lower doses of methylprednisolone in children undergoing cardiac operations. Methods. Thirty children, between 1 and 18 months old and undergoing total correction of tetralogy of Fallot, were randomized in double-blind fashion to receive either 5 or 30 mg/kg of intravenous methylprednisolone after anesthesia induction. Plasma concentrations of methylprednisolone, interleukin-6 (IL-6), IL-8, and IL-10, troponin T, and glucose were measured at anesthesia induction before administration of the study drug, at 30 minutes on cardiopulmonary bypass (CPB), just after weaning from CPB, and at 6 hours after CPB. Troponin T and blood glucose were also measured on the first postoperative morning. Results. Significantly higher methylprednisolone concentrations were measured in patients receiving 30 mg/kg of methylprednisolone at 30 minutes on CBP, after weaning from CPB and at 6 hours after CPB (p