Clipped to a fingertip, a pulse oximeter uses light beams to analyze your heart rate and the amount of oxygen being carried in your bloodstream. Normal levels in otherwise-healthy adults range between ...
Early on in the COVID-19 pandemic, Kimani Toussant’s wife, an epidemiologist, brought him an article about how pulse oximeters appeared to be less accurate in people with darker skin. The small ...
Dr. Takuo Aoyagi, a Japanese bioengineer, was the first to invent pulse oximetry in 1974. 2 The pulse oximeter is based on the light absorption characteristics of hemoglobin at different wavelengths.
SAN FRANCISCO — The discovery that fingertip oxygen-measuring devices might contribute to health disparities because they appear to work less well on patients with darker skin has roiled the world of ...
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