What is the role of ambulation in the pathogenesis of venous insufficiency?

Updated: Oct 22, 2018
  • Author: Robert Weiss, MD; Chief Editor: William D James, MD  more...
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Answer

Second, during normal ambulation, calf muscles decrease venous pressures by approximately 70% in the lower extremities (see the image below). With rest, pressures return to normal in approximately 30 seconds. In diseased veins, ambulation decreases venous pressures by only 20%. When ambulation is stopped, pressure in the vein lumen increases slowly, returning to normal over a period of minutes.

Hemodynamic charting of (a) healthy patients, (b) Hemodynamic charting of (a) healthy patients, (b) patients with only varicose veins, (c) patients with incompetent perforator veins, and (d) patients with deep and perforator incompetence.

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