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Venous strain-gauge plethysmography--reference values

H Akesson1, L Brudin

  • 1Department of Vascular and Renal Diseases, Malmö University Hospital, Sweden.

International Angiology : a Journal of the International Union of Angiology
|September 1, 1996
PubMed
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This study establishes normal age and sex reference values for venous strain-gauge plethysmography, crucial for diagnosing venous insufficiency. Refilled volume and T90 are recommended for clinical use.

Area of Science:

  • Vascular Medicine
  • Physiology
  • Medical Diagnostics

Background:

  • Venous strain-gauge plethysmography is a valuable tool for assessing venous function.
  • Establishing normative data is essential for accurate interpretation of results.
  • Previous studies lacked comprehensive age and sex-specific reference values.

Purpose of the Study:

  • To determine sex and age-related reference values for venous strain-gauge plethysmography.
  • To provide a basis for diagnosing venous insufficiency using this method.
  • To aid in follow-up studies after therapeutic interventions.

Main Methods:

  • Strain-gauge plethysmography was performed on 58 healthy volunteers (27 men, 31 women) aged 15-74 years.
  • Measurements included refilled volume (RV), half refilling time (T50), and refilling time to 90% of RV (T90).

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  • Participants had no history or signs of venous insufficiency.

    • Main Results:

    • Established lower limits for RV (0.6 ml/100 ml tissue) and T50 (3.3 seconds).
    • Developed an age-dependent equation for T90: ln(T90) = 3.864 - 0.0111*age - 0.337.
    • Reported methodological errors for RV (15%), T50 (28%), and T90 (23%).

    Conclusions:

    • Strain-gauge plethysmography is suitable for evaluating venous insufficiency.
    • The established age and sex-related reference values are critical for clinical application.
    • Refilled volume (RV) and T90 are recommended for clinical use due to their reliability.