The patient received the proper treatment. 4 weeks later, she presented with occasional dizziness. Her symptoms occur usually while she combs her hair. She did not lose consciousness. She was evaluated for orthostatic hypotension, and the evaluation was normal. She has a normal ECG with a normal sinus rhythm. MR angiography shows delayed enhancement of the left vertebral artery, with retrograde flow. Which of the following arteries is most likely to be occluded based on these findings?

Question

Quizplus · Accepted Answer

Eductional Objective: Subclavian steal syndrome originates from the stenosis in the subclavian artery proximal to the origin of the vertebral artery. This leads to the reversed blood flow from the contralateral vertebral artery to the ipsilateral vertebral artery. The symptoms include vertigo and dizziness. The symptoms are exacerbated with arm exercise.

The Patient Received the Proper Treatment