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Optical fibre plethysmograph.

Y Shah, R A Valsler, A W Palmer

    Journal of Biomedical Engineering
    |October 1, 1985
    PubMed
    Summary
    This summary is machine-generated.

    A novel optical fibre transducer non-invasively measures blood volume in the jugular vein or carotid artery. This device accurately predicts cardiac cycle states for physiological measurements, even within NMR scanners.

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    Area of Science:

    • Biomedical Engineering
    • Medical Devices
    • Physiological Monitoring

    Background:

    • Accurate physiological measurements are crucial for patient monitoring.
    • Non-invasive techniques are preferred to minimize patient discomfort and risk.
    • Existing monitoring devices can be affected by electromagnetic interference, particularly in MRI environments.

    Purpose of the Study:

    • To introduce a novel optical fibre transducer for blood volume assessment.
    • To demonstrate the device's capability in predicting cardiac cycle states.
    • To validate the transducer's performance in electromagnetically challenging environments like NMR scanners.

    Main Methods:

    • Development of a non-invasive optical fibre transducer.
    • Application of the transducer to the external jugular vein and carotid artery.

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  • Testing the device's robustness and performance within an NMR scanner environment.

    • Main Results:

    • The optical fibre transducer successfully obtained blood volume information.
    • Accurate predictions of the cardiac cycle state were achieved.
    • The device demonstrated immunity to electromagnetic interference from the NMR scanner.

    Conclusions:

    • The optical fibre transducer offers a robust, non-invasive method for blood volume and cardiac cycle assessment.
    • This technology has potential applications in physiological monitoring, especially in MRI settings.
    • The device's non-magnetic and non-invasive properties enhance its utility in clinical environments.