Venous occlusion plethysmography

Author:Prof. Dr. med. Peter Altmeyer

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Last updated on: 29.10.2020

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Synonym(s)

Impedance Plethysmography; Plethysmography gravidmetric; Straingauge vein occlusion plethysmography; Venous occlusion plethysmography optical; VVP; Water occlusion plethysmography

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DefinitionThis section has been translated automatically.

Method for determining the pressure-dependent venous capacity and the maximum outflow volume of the leg (outflow plethysmography) at different dynamic pressure levels. The measurement is usually carried out via strain-gauge plethysmography. The calf and ankle or the largest circumference of the forearm and wrist serve as the measuring point. Further plethysmographic methods:

  • Water plethysmography (volume measurements via water displacement)
  • impedance plethysmography (measurement of voltage differences)
  • Videooplethysmography (not very common; high specificity, sensitivity and accuracy in acute ileofemoral venous thrombosis; the blood volume of the calf and the speed of emptying are reduced)
  • Air plethysmography (detection of changes in air pressure in a cuff or airtight measuring chamber enclosing the limb
  • Gravidmetric plethysmography: detection of the weight changes of the extremity
  • Optical vein occlusion plethysmography: detection of the reflection changes under a sensor
  • Microwave plethysmography: detection of tissue absorption in the microwave range of the electromagnetic spectrum

Authors

Last updated on: 29.10.2020

Author: Prof. Dr. med. Peter Altmeyer