Q1. A 69 yo presents to the ED with a sudden onset of painless vision loss in his left eye. He states the episode lasted 20 seconds and he feels fine now. He had two other similar episodes a month ago. Other than diabetes and hypertension, his health has been fine. He has a 30 pack year smoking history and one bottle of beer everyday. He is on enalapril and metformin. On a physical exam of the neck you hear the following. Considering his history, what is your preliminary diagnosis?
a. Migraine
b. Carotid artery dissection
c. Carotid artery fistula
d. Carotid artery atherosclerosis
e. Bacterial endocarditis
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