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Figure 3. A "bunny" waveform from the left vertebral artery (VA) of a patient with coronary–subclavian steal syndrome caused by a 90% stenosis within a left subclavian artery stent. This usually manifests itself in complete reversal of VA flow, although in this case there were concomitant ipsilateral common and internal carotid artery origin stenoses of 50% and 90%, respectively, and the right VA was diffusely diseased on arteriography.

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