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Related Experiment Videos

Venous hemodynamics during impulse foot pumping

L A Killewich1, G P Sandager, A H Nguyen

  • 1Department of Surgery, University of Maryland Medical Systems, Baltimore 21201, USA.

Journal of Vascular Surgery
|November 1, 1995
PubMed
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Intermittent pneumatic compression of the foot significantly increases lower limb venous outflow. This technique shows promise for deep venous thrombosis prophylaxis in high-risk patients.

Area of Science:

  • Vascular Physiology
  • Medical Device Technology

Background:

  • Deep venous thrombosis (DVT) remains a significant clinical concern.
  • Effective prophylactic measures are crucial for preventing DVT in high-risk individuals.

Purpose of the Study:

  • To quantify the impact of intermittent pneumatic compression (IPC) on lower limb venous velocities.
  • To assess the effect of IPC on popliteal vein (PV) and common femoral vein (CFV) blood flow using duplex ultrasound.

Main Methods:

  • Duplex ultrasound was used to measure PV and CFV velocities in 30 lower limbs of 15 healthy volunteers.
  • Measurements were taken before and during foot pumping with an impulse foot pump system at varying pressures and durations.
  • Data were collected in both supine and reverse Trendelenburg positions.

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Main Results:

  • Foot pumping with IPC significantly increased mean maximum venous velocity (MVV) in both PV and CFV compared to resting velocities.
  • The increase in MVV was consistent across different pressure settings and impulse durations.
  • The percentage increase in MVV was notably higher in the PV than in the CFV.

Conclusions:

  • IPC of the plantar venous plexus effectively enhances lower limb venous outflow in healthy subjects.
  • The findings support further investigation into IPC as a mechanical prophylaxis for DVT in selected patient populations.