ARTS: A Large, International Trial of Thromboprophylaxis in Intra-abdominal, Gynecologic, and Urologic Surgery.

ARTS will be the first trial to compare anticoagulation with a direct oral anticoagulant (apixaban) versus no anticoagulation among patients undergoing intra-abdominal, gynecologic, or urologic surgery at sufficiently similar risk of deep vein thrombosis or pulmonary embolism and major bleeding.