Pulse Oximetry > Fact Sheets > Yale Medicine
https://www.yalemedicine.org/conditions/pulse-oximetry
WebShare. Overview. Pulse oximetry is a term that frequently appears online and in news reports in connection with COVID-19. But what, exactly, is it? Basically, pulse oximetry is a painless, noninvasive method of measuring the saturation of oxygen in a person’s blood. Oxygen saturation is a crucial measure of how well the lungs are working.
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