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KMID : 1144120190090010021
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Biomedical Engineering Letters
2019 Volume.9 No. 1 p.21 ~ p.36
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Current progress of photoplethysmography and SPO2 for health monitoring
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Tamura Toshiyo
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Abstract
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A photoplethysmograph (PPG) is a simple medical device for monitoring blood flow and transportation of substances in the blood. It consists of a light source and a photodetector for measuring transmitted and reflected light signals. Clinically, PPGs are used to monitor the pulse rate, oxygen saturation, blood pressure, and blood vessel stiffness. Wearable unobtrusive PPG monitors are commercially available. Here, we review the principle issues and clinical applications of PPG for monitoring oxygen saturation.
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KEYWORD
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Photoplethysmograph (PPG), Pulse rate, Transmitted light, Reflected light, RGB image, Respiratory rate, Motion artifact
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