Correct Answer - A Answer- A. Reversal of blood flow in the ipsilateral vertebral artery Subclavian steal syndrome may occur if the first part of the subclavian artery is occluded. Arm exercise causes syncope because of reversed flow, in the vertebral artery leading to cerebral ischemia. It can be treated by angioplasty or surgery and is rare. That is the result of an ipsilateral hemodynamically significant lesion of the proximal subclavian artery @surgeryvideos 13.6K views08:38
