Patients who survive a large anterior myocardial infarction (MI) or who have a left ventricular (LV) mural thrombus seen on echocardiography are at high risk of having an embolic stroke. Some data suggest that this risk is reduced by early administration of intravenous heparin. For the patient without a large anterior MI or LV mural thrombus who did not receive reperfusion therapy, there are few data on the benefit of heparin beyond that of aspirin, (...)