How is the venous anatomy affected by venous insufficiency?

Updated: Sep 25, 2020
  • Author: Robert Weiss, MD; Chief Editor: William D James, MD  more...
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In venous insufficiency, after prolonged standing, the veins are completely filled, and all the venous valves float open. At this time, high hydrostatic venous pressure results from the unbroken column of fluid that extends from the head to the foot. Failed valves cause the column of standing blood in the vein to remain high even during ambulation. The hydrostatic pressure increases during and immediately after ambulation, which cause venous congestion.

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