Elevated Venous Thromboembolism Risk Following Colectomy for IBD Is Equal to Those for Colorectal Cancer for Ninety Days After Surgery

BACKGROUND: The risk of postoperative venous thromboembolism is high in patients with colon cancer and IBD. Although The American Society of Colon and Rectal Surgeons suggests posthospital prophylaxis after surgery in patients with colon cancer, there are no such recommendations for patients with IBD. OBJECTIVE: This study aims to analyze the incidence and risk factors for postoperative venous thromboembolism. DESIGN: This was a retrospective review using the Explorys platform. SETTINGS: Aggregated electronic medical records from 26 major health care systems across the United States from 1999 to 2017 were used for this study. PATIENTS: Patients who underwent colon surgery were included. MAIN OUTCOME MEASURES: Patients were followed up to 90 days postoperatively for deep vein thrombosis and pulmonary embolism. RESULTS: A total of 75,620 patients underwent colon resections, including 32,020 patients with colon cancer, 9850 patients with IBD, and 33,750 patients with diverticulitis. The 30-day incidence of venous thromboembolism was higher in patients with cancer and IBD than in patients with diverticulitis (2.9%, 3.1%, and 2.4%, p

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