“…23 The risk among surgery patients can be further stratified based on patient age, type of surgery, and the presence of active cancer. 29,30 The incidence of postoperative venous thromboembolism is increased with advancing patient age. 30,31 High-risk surgical procedures include neurosurgery, major orthopedic surgery of the leg, thoracic, abdominal or pelvic surgery for malignancy, renal transplantation, and cardiovascular surgery.…”