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Related Experiment Videos

Multimodality evaluation of pressure relief surfaces

R E Sachse1, S A Fink, B Klitzman

  • 1Durham Veterans Administration Hospital, Department of Cell Biology and Biomedical Engineering, Duke University, Durham, NC, USA.

Plastic and Reconstructive Surgery
|December 19, 1998
PubMed
Summary

Evaluating support surfaces using interface pressure, oxygen, and blood flow measurements reveals significant differences. This multimodality approach offers a comprehensive assessment of pressure ulcer prevention strategies.

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Area of Science:

  • Biomedical Engineering
  • Rehabilitation Medicine
  • Wound Care Science

Background:

  • Support surfaces are crucial for preventing pressure ulcers.
  • Assessing their efficacy requires understanding physiological responses.
  • Current methods may not capture the full picture of surface performance.

Purpose of the Study:

  • To evaluate six support surfaces using a multimodality approach.
  • To measure interface pressure, transcutaneous oxygen tension (TcPO2), and blood flow.
  • To compare the physiological effects of different support surfaces on healthy subjects.

Main Methods:

  • Utilized a force-sensing resistor array to measure interface pressure distribution.
  • Employed laser Doppler flowmetry for blood flow assessment.

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  • Measured TcPO2 in pressure ulcer-prone areas (sacrum, trochanter, ischium) in supine and lateral positions.

    • Main Results:

    • Statistically significant differences (p < 0.05) were found between surfaces for blood flow and pressure.
    • The lateral position over the trochanter showed notable differences in blood flow.
    • Supine position over the sacrum revealed significant differences in TcPO2 measurements.

    Conclusions:

    • Multimodality evaluation (pressure, TcPO2, blood flow) provides a more thorough assessment than single techniques.
    • This approach enhances understanding of the physiological impact of support surfaces.
    • Future research will focus on patient studies and predictive algorithms for pressure ulcer prevention.