Summary
For years, it has been known that pulse oximeters may present racial biases, with studies dating back as far as the late 1980s suggesting a flaw in how the device measures oxygen in people with darker skin tones. This article looks at how the Covid-19 pandemic finally brought the problem to the forefront of medicine. Ashraf Fawzy, Assistant Professor of Medicine at the Johns Hopkins University School of Medicine, talks about how he and other doctors noticed a trend in pulse oximeter readings not matching up to patient symptoms, and how they went on to research the issue, publishing their results in a study in May 2022. Their study found that Black and Hispanic patients were 29% and 23% less likely than white patients, respectively, to have pulse oximeters recognise their eligibility for more aggressive Covid-19 treatment. The resulting delay in care for patients with darker skin tones is likely to have a significant impact on patient outcomes.
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