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Related Experiment Videos

A microcomputer oximeter for whole blood.

J W Kiel, A P Shepherd

    The American Journal of Physiology
    |May 1, 1983
    PubMed
    Summary
    This summary is machine-generated.

    This study presents a cost-effective oximetry system for measuring blood oxygen saturation. The system uses readily available components and computer technology for accurate, continuous oxyhemoglobin monitoring in cardiovascular research.

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    Area of Science:

    • Biomedical Engineering
    • Medical Devices
    • Physiological Monitoring

    Background:

    • Accurate measurement of blood oxygen saturation is crucial for diagnosing and managing various medical conditions.
    • Existing oximetry methods can be expensive or lack the necessary speed for real-time physiological studies.

    Purpose of the Study:

    • To develop and validate an accessible, cost-effective system for measuring oxyhemoglobin saturation in whole blood.
    • To enable continuous, real-time monitoring of blood oxygen levels using standard laboratory equipment.

    Main Methods:

    • Utilized an Apple II+ computer, an analog-to-digital converter, and a custom electronic circuit for dual-wavelength illumination.
    • Developed a BASIC program for data acquisition and analysis of light absorption by blood.

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  • Validated the system's performance against standard oxygen saturation analyses.

    • Main Results:

    • The developed oximeter demonstrated a linear correlation with standard methods for measuring oxyhemoglobin saturation.
    • The system achieved a sampling rate sufficient for essentially continuous measurements in cardiovascular studies.
    • The oximeter is easily implemented using standard electronic components.

    Conclusions:

    • This system provides a reliable and affordable solution for measuring blood oxygen saturation.
    • Its ease of implementation and continuous monitoring capabilities make it suitable for widespread use in research settings.
    • The system's flexibility allows integration with other data acquisition channels for comprehensive physiological monitoring.