What is the role of maximum venous outflow (MVO) testing in the evaluation of venous insufficiency?

Updated: Oct 22, 2018
  • Author: Robert Weiss, MD; Chief Editor: William D James, MD  more...
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MVO testing is performed to detect an obstruction to venous outflow from the lower leg, no matter what the cause. Its results are a measure of the speed with which blood can flow out of a maximally congested lower leg when an occluding thigh tourniquet is suddenly removed.

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