Case 1. C.A. (S.E.H. No. 66–15874), a 49-year-old man, had syncopal episodes for 3 years occurring about once a week during the past year. The attacks were precipitated by driving a bus. Syncope was ...

WE have recently studied 2 patients with symptoms of cerebral ischemia in whom a reversal of blood flow through the left vertebral artery was demonstrated. In both cases the anatomic lesion producing ...

Subclavian steal phenomenon occurs when there is an obstruction of the subclavian artery proximal to the vertebral artery origin, which leads to reversal of blood flow in the vertebral artery. When ...

Subclavian steal syndrome is characterized by abnormal blood flow in the arteries. The condition has many potential causes, some of which can be serious without proper treatment. Subclavian steal ...

Vertebral Basilar Angiogram. (Left) lateral view; (Right) AP view. This study was performed by injecting contrast into the right vertebra artery, which is well opacified. There is also some retrograde ...

Currently, there is no consensus on the most effective medical therapy for posterior circulation ischemia. To date, there have been no randomized trials studying the use of different antiplatelet ...

Arterial dissections involving arteries in the neck and head are being identified increasingly readily because of growing awareness of their clinical features, along with advances in imaging ...