With the advent of cyclosporine A, heart transplantation has become a widely accepted treatment for patients with end-stage cardiac disease that is not amenable to medical or surgical treatment. Between July 1982 and December 1985, 86 heart transplantations were performed at the Texas Heart Institute with cyclosporine A and prednisone used for immunosuppression. Thirty patients had complications requiring general surgical consultation. The pancreas and biliary tracts were most commonly affected. Pancreatitis developed in sixteen patients; five patients required operative intervention, resulting in a 40% mortality rate. Five of nine patients with cholecystitis required cholecystectomy. All patients survived the procedures. Other gastrointestinal complications included colonic ileus, bowel perforation, gastrointestinal bleeding, gastric outlet obstruction, and perirectal abscess. Patients who have undergone cardiac transplantation are susceptible to life-threatening infections and are at risk of serious complications requiring general surgical intervention. Better results can be obtained in these complex clinical situations when complications are identified early and managed aggressively through the adjustment of immunosuppression, adequate selection of antimicrobial agents, and proper timing of surgical intervention.