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Ann Thorac Surg 1999;67:1006-1011
© 1999 The Society of Thoracic Surgeons
a Department of Anesthesiology Loyola University Medical Center, Foster G. McGaw Hospital, Maywood, Illinois, USA
b Department of Thoracic and Cardiovascular Surgery, Loyola University Medical Center, Foster G. McGaw Hospital, Maywood, Illinois, USA
Accepted for publication September 17, 1998.
Address reprint requests to Dr Chaney, Department of Anesthesiology, Loyola University Medical Center, Foster G. McGaw Hospital, 2160 S First Ave, Maywood, IL 60153
Presented at the Twentieth Annual Meeting of the Society of Cardiovascular Anesthesiologists, Seattle, WA, April 25–29, 1998.
Background. Whether or not methylprednisolone is beneficial during cardiac operation remains controversial. This study examines the effects of the drug on complement activation and hemodynamics in patients undergoing cardiac operation and early extubation.
Methods. Patients undergoing cardiac operation were randomized to receive either intravenous methylprednisolone (group MP) or intravenous placebo (group NS). Complement 3a (C3a) levels and hemodynamic parameters were obtained perioperatively. Extubation was accomplished at the earliest clinically appropriate time.
Results. Both groups exhibited equivalent increases in C3a levels after exposure to bypass. Group MP exhibited increased cardiac index, decreased systemic vascular resistance, and increased shunt flow when compared to group NS. More group MP patients required hemodynamic support and group MP patients had prolonged extubation times.
Conclusions. Methylprednisolone was unable to attenuate complement activation and led to hemodynamic alterations (primarily vasodilation) that may hinder early extubation in patients after cardiac operations.
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