Outcomes
blood loss, infection, lower extremity venous ultrasound, thrombosis
THROMBOSIS, MYOCARDIAL INFARCTION, BLOOD LOSS, INFECTION, COMPLICATIONS
After admission, the baseline information of patients was obtained, such as gender, age, body mass index (BMI), American Society of Anesthesiologists (ASA) physical status classification, prothrombin time(PT), prothrombin time activity(PTA), international normalized ratio (INR), activatedpartial prothrombin time(APTT), thrombin time(TT), and fibrinogen(FIB).The primary indicators were collected, including perioperative blood loss (total bloodloss, intraoperative bloodloss, and hidden blood loss) and Hb drop value.The total blood loss was calculated with the Gross method [Secondary indicators included the operation time, coagulation (D-dimer and fibrin degradation products [FDPs]) and inflammatory (C-reactive protein [CRP] and erythrocyte sedimentation rate [ESR]) indicators before surgery and on 1 and 3 days after surgery, and complications (blood transfusion, thrombosis, wound complications, early infection, and readmission) within 6 weeks.Bilateral lower extremity venous ultrasound was performed for all patients on postoperative days 1 and 14. Patients were postoperatively followed up for 6 weeks, which included wound complications, infection, PE, myocardial infarction, and readmission.