Preoperative hemostasis and its association with bleeding and blood component transfusion requirements in cardiopulmonary bypass surgery.

Background: Variables of hemostasis before surgery might indicate an elevated risk of bleeding. We determined hemostasis tests and standardized bleeding history and their association with bleeding and transfusion requirements in cardiopulmonary bypass (CPB) surgery.

Study Design And Methods: In a prospective trial, variables from 104 patients were associated with postsurgical bleeding and with red blood cells (RBCs) and platelet concentrate (PC) transfusions.