Data Collection and Analysis
Demographic characteristics, type and duration of surgery, preoperative antithrombotic or anticoagulant therapy, timing and dosage of postoperative antithrombotic and anticoagulant drugs, data related to the postoperative course as well as laboratory data (time activated partial thromboplastin, INR, platelet count, coagulation factors activity, ROTEM parameters) related to the day of surgery and postoperative day 1 were collected retrospectively from the medical record. Additionally, the following data were collected at T1 and T2: blood gas analysis, data related to any transfusions, core temperature and diuresis, data related to cardiopulmonary bypass. During ICU stay, blood losses from drains at 6-12-24 hours after surgery and any blood component transfusions administered were also collected .