[Risk factors for excessive bleeding in patients undergoing open heart surgery with cardiopulmonary bypass].

Objective: To evaluate the pre- and intraoperative risk factors associated with excessive bleeding during the perioperative period in adult patients undergoing open heart surgery with cardiopulmonary bypass (CPB).

Methods: A total of 1079 consecutive patients undergoing open heart surgery with CPB from January 2001 to May 2010 were included (except for emergency operation). The possible risk factors associated with excessive bleeding were retrospectively analyzed.