Bleeding complications, particularly wound hematomas, occur in 1.4 to 3.0% of patients undergoing carotid endarterectomy and are associated with nonreversal of intraoperative UFH, hypertension, and perioperative antiplatelet therapy.171???172 If intraoperative UFH is not fully reversed or continuous UFH anticoagulation is administered postoperatively, perioperative aspirin therapy would potentiall