What is the role of photoplethysmography in the diagnosis of venous insufficiency?

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

Photoplethysmography uses infrared light to assess capillary filling during exercise. Increased capillary filling is indicative of venous reflux and, consequently, of incompetent veins.


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