Elective cardiac operation in a patient with severe hemophilia and acquired factor VIII antibodies.

This paper describes a successful cardiac operation in a young boy with hemophilia, congenital heart disease, severe factor VIII deficiency, and an acquired high titer antibody to factor VIII. To our knowledge, there have been no published cases of elective cardiac operations in a person with severe hemophilia and an accompanying complex problem. Utilizing the team approach, we administered a megadose bolus of factor VIII concentrate preoperatively (eight times the calculated dose), followed by a continuous intravenous infusion at 500 units/hr throughout the procedure and at a reduced dose for the first 5 postoperative days. With the anamnestic rise in factor VIII antibody on day 5, activated prothrombin complex concentrates were substituted for factor VIII and provided continued adequate hemostasis during the remaining 9 postoperative days. The rapid infusion of large quantities of factor VIII was effective in neutralizing the low titer inhibitor and providing normal hemostasis during the procedure. In addition, activated prothrombin complex concentrates were substituted for factor VIII coagulant without recurrent bleeding or thromboembolic phenomena.