A 71-year-old man comes to the physician two days after experiencing a 10-minute painless loss of vision in his left eye. Blood pressure is 150/95. Carotid duplex ultrasonography shows 50% occlusion bilaterally. Current medications are lisinopril and aspirin. Which of the following is the most appropriate pharmacologic therapy for this patient?
Clopidogrel
Fenofibrate
Heparin
Simvastatin
tPA
Warfarin
