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Related Experiment Video

Updated: Dec 25, 2025

Fabrication of Compressed Hosiery and Measurement of its Pressure Characteristic Exerted on the Lower Limbs
08:39

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Excessive pressure in multichambered cuffs used for sequential compression therapy.

Patrick Segers1, Jean-Paul Belgrado, Andre Leduc

  • 1Hydraulics Laboratory, Institute Biomedical Technology, Ghent University, Sint-Pietersnieuwstraat 41, 9000 Ghent, Belgium. patrick.segers@navier.rug.ac.be

Physical Therapy
|September 28, 2002
PubMed
Summary

Pneumatic compression devices can deliver much higher pressures than indicated, potentially harming patients. Researchers recommend using lower target pressures for safer lymphatic drainage therapy.

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Area of Science:

  • Biomedical Engineering
  • Medical Devices
  • Therapeutic Compression

Background:

  • Pneumatic compression devices (PCDs) utilize multi-chambered cuffs for sequential inflation in lymphatic drainage.
  • Understanding the pressure dynamics within these cuffs is crucial for effective therapeutic application.

Purpose of the Study:

  • To investigate the relationship between cuff chamber pressure (P(chamber)) and cuff-skin interface pressure (P(interface)).
  • To analyze the mechanical interactions between cuff chambers and their impact on device control.

Main Methods:

  • Testing a commercial pressure controller on model limbs (cylindrical and ellipsoidal) with varying diameters.
  • Measuring P(chamber) and P(interface) during sequential inflation at target pressures of 30-100 mm Hg.
  • Evaluating the influence of local curvature on interface pressure.

Main Results:

  • Interface pressure generally matched chamber pressure, influenced by limb curvature.
  • Cuff chamber interactions caused pressures in the first inflated chamber to exceed target pressures by up to 80%.
  • Example: 80-mm model showed pressures reaching 141 mm Hg instead of the targeted 100 mm Hg.

Conclusions:

  • Significant discrepancies between target and actual pressures compromise PCD therapeutic control and efficacy.
  • Current clinical practices may apply excessive pressures, risking adverse effects.
  • Lower target pressures (<30 mm Hg) are recommended for safer and more effective pneumatic compression therapy.