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Subclavian steal syndrome

Summary of Subclavian steal syndrome
Subclavian steal syndrome is a constellation of signs and symptoms that arise from retrograde blood flow in the vertebral artery or the internal thoracic artery, due to a proximal stenosis and/or occlusion of the subclavian artery. The arm may be supplied by blood flowing in a retrograde direction down the vertebral artery at the expense of the vertebrobasilar circulation. Subclavian steal syndrome can result in symptoms such as: presyncope, syncope, neurological defects, blood pressure differential between the arms.




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Subclavian steal syndrome


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High Yield Notes
4 pages

Subclavian steal syndrome

11 flashcards

USMLE® Step 1 style questions USMLE

1 questions

A 76-year-old man comes to the clinic with right arm pain and numbness, especially during exertion. He also complains of dizziness and vertigo. Blood pressure is 142/88 in the left arm and 108/66 in the right arm. Angiogram shows stenosis of the right subclavian artery just proximal to the origin of the vertebral artery. Which of the following is the most likely mechanism that maintains blood flow to the right extremity?

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