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A microprocessor based photoplethysmograph for use in clinical practice

I P Wright1, M Griffiths, C Childs

  • 1North Western Medical Physics Department, University Hospital of South Manchester.

Anaesthesia
|October 1, 1995
PubMed
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This study presents a microprocessor-based photoplethysmography system for long-term skin blood flow measurement. The system offers a qualitative assessment of peripheral blood flow changes, with potential clinical applications.

Area of Science:

  • Biomedical Engineering
  • Physiology

Background:

  • Assessing peripheral skin blood flow is crucial for understanding various physiological and pathological conditions.
  • Existing methods may have limitations in long-term monitoring or ease of use.

Purpose of the Study:

  • To describe a novel microprocessor-based system for photoplethysmography.
  • To evaluate its utility in measuring skin blood flow over extended periods.

Main Methods:

  • Development of a microprocessor-based photoplethysmography system.
  • Design for long-term monitoring capabilities.
  • Utilized personal computer for data analysis.

Main Results:

  • The developed photoplethysmograph provides a qualitative assessment of peripheral skin blood flow.

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  • The system is suitable for prolonged use.

    • Conclusions:

    • The described photoplethysmography system is a viable qualitative tool for monitoring skin blood flow.
    • Potential applications exist across a range of clinical conditions requiring assessment of peripheral circulation.