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Related Experiment Videos

The piezoelectric pulse sensor device: a prospective evaluation

H A Hashemi1, M L Katz, A P Carter

  • 1Department of Surgery, Temple University Hospital, Philadelphia, Pa 19140.

Annals of Vascular Surgery
|July 1, 1994
PubMed
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This study shows a new piezoelectric pulse sensor can effectively detect lower extremity arterial disease. It accurately identifies pulsatile perfusion, proving useful for monitoring arterial blood flow.

Area of Science:

  • Biomedical Engineering
  • Vascular Medicine
  • Medical Device Technology

Background:

  • Peripheral artery disease (PAD) diagnosis relies on methods like palpation and Doppler ultrasound.
  • Accurate, non-invasive detection of lower extremity arterial perfusion is crucial for PAD management.
  • Existing methods may have limitations in sensitivity or ease of use.

Purpose of the Study:

  • To evaluate the technical applications of a novel piezoelectric pulse sensor.
  • To assess the sensor's ability to detect lower extremity occlusive arterial disease.
  • To determine the sensor's sensitivity and waveform response to varying perfusion pressures.

Main Methods:

  • Prospective study involving healthy volunteers and patients with suspected arterial disease.

Related Experiment Videos

  • Sensor placement on feet during temporary arterial occlusion to detect pulsatile flow post-deflation.
  • Comparison of sensor data with palpable pulses, Doppler signals, and foot volume waveforms.

    • Main Results:

    • The piezoelectric pulse sensor successfully detected pulsatile flow in 100% of dorsalis pedis arteries and 10% of posterior tibial arteries.
    • Sensor sensitivity for detecting pulsatile perfusion matched audible Doppler signals.
    • A linear relationship was observed between waveform characteristics and increasing perfusion pressures.

    Conclusions:

    • The piezoelectric pulse sensor is a sensitive tool for monitoring lower extremity arterial perfusion via the dorsalis pedis artery.
    • The sensor demonstrates potential as an effective diagnostic aid for occlusive arterial disease.
    • Further investigation may be needed to optimize sensor performance for the posterior tibial artery.