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Measuring venous pumping function by strain-gauge plethysmography.

G Mosti1, H Partsch

  • 1Angiology Department, Barbantini Hospital, Lucca, Italy. jmosti@tin.it

International Angiology : a Journal of the International Union of Angiology
|October 7, 2010
PubMed
Summary
This summary is machine-generated.

A new plethysmographic method quantifies calf pump function improvement in venous insufficiency patients using compression devices. Inelastic bandages significantly enhanced ejection fraction (EF), unlike elastic stockings.

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Area of Science:

  • Vascular Medicine
  • Hemodynamics
  • Medical Device Technology

Background:

  • The hemodynamic effects of compression devices on venous insufficiency patients remain debated.
  • Quantitative assessment of venous pumping function improvement is crucial for effective treatment.
  • Strain gauge plethysmography offers a potential method for evaluating these effects.

Purpose of the Study:

  • To present a quantitative method for assessing venous pumping function improvement using compression devices.
  • To evaluate the hemodynamic impact of various compression devices in patients with venous insufficiency.

Main Methods:

  • Strain gauge plethysmography was used to measure calf pump ejection fraction (EF).
  • Studies were conducted on 15 healthy volunteers and 68 patients with severe superficial venous incompetence.
  • Measurements were taken with and without compression devices at varying pressures and body positions.

Main Results:

  • Normal subjects had a median EF of 64.6; venous patients exhibited approximately half this value.
  • Inelastic bandages significantly improved EF, with greater enhancement at higher pressures (20-60 mmHg).
  • Elastic stockings provided only moderate improvement; EF correlated significantly with standing and walking pressures.

Conclusions:

  • The described plethysmographic method effectively quantifies hemodynamic changes induced by compression devices.
  • This method is valuable for assessing the efficacy of different compression strategies in venous insufficiency.