Photoplethysmography (PPG) is a non-invasive method used to diagnose parameters associated with optical blood analysis. Equipment such as an oximeter utilizes this method to diagnose oxygen saturation. The present work aims to analyze and characterize devices for PPG and understand their operating principles through quantitative experimental tests. The conclusion of this study is expected to obtain information about the technical and constructive aspects of the optical system of some PPG devices.
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Santos et al. (2024) studied this question.
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