Used for the prophylaxis of deep vein thrombosis, pulmonary embolism, and arterial thromboembolic events; the treatment of deep vein thrombosis, pulmonary embolism, unstable angina pectoris, acute myocardial infarction, and acute peripheral arterial occlusion; the prophylaxis of mural thrombosis following myocardial infarction; and during extracorporeal circulation and hemodialysis.