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subclavian steal

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steal (stēl) diversion, as of blood flow, of something from its normal course, as in occlusive arterial disease.
subclavian steal  in occlusive disease of the subclavian artery, a reversal of blood flow in the ipsilateral vertebral artery from the basilar artery to the subclavian artery beyond the point of occlusion.

subclavian steal
n.
Obstruction of the subclavian artery proximal to the origin of the vertebral artery. Blood flow through the vertebral artery is reversed, causing symptoms of cerebrovascular insufficiency.

steal [stēl]
diversion of something from its normal course, usually referring to blood flow in occlusive arterial disease.
subclavian steal in occlusive disease of the subclavian artery, a reversal of blood flow in the ipsilateral vertebral artery from the basilar artery to the subclavian artery beyond the point of occlusion; this may deprive the brain of blood and cause the subclavian steal syndrome.


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Symptoms of subclavian steal are frequently attributed to cerebral ischemia as mentioned above.
 
 
 
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