What is the venous refilling time (VRT) reference range?

Updated: Sep 25, 2020
  • Author: Robert Weiss, MD; Chief Editor: William D James, MD  more...
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The VRT is the time necessary for the lower leg to become suffused with blood after the calf muscle pump has emptied the lower leg as thoroughly as possible. When patients with healthy veins are in a sitting position, venous refilling of the lower leg occurs only by means of arterial inflow and requires at least 2 minutes.

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