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A 44-year-old member asked:

Does peak systolic velocity (psv) determines % of carotid blockage?

1 doctor answer2 doctors weighed in
Dr. Bennett Werner
Cardiology 44 years experience
Yes: It correlates. As blood travels through a progressively smaller orifice, it must speed up to get through and that measurement is plugged into a formula to yield an orifice size.

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Last updated Aug 5, 2019


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