Health
Study: Blood oxygen detectors give blacks more frequent inaccurate readings
Medical devices that measure oxygenated blood levels are likely to give misleading or inaccurate results to black patients, according to a study published Thursday in the New England Journal of Medicine.
Researchers analyzed the data We compared data from thousands of adult patients who received oxygen supplementation at the University of Michigan Hospital in Ann Arbor to data from 37,000 patients in the intensive care units of approximately 200 other hospitals.
The finger-worn pulse oximeters they found were likely to return inaccurate results for black users, based on comparison of data with tests that take arterial blood samples.
“In the University of Michigan cohort, among patients who showed 92-96% oxygen saturation on pulse oximetry, 88 of the 749 arterial blood gas measurements in black patients and less than 88% of arterial oxygen in 99. Saturation was found. Of the 2,778 measurements in white patients, “he said.
Due to the coronavirus pandemic, the device is likely to be widely used in recent months, studies say. Studies suggest that black Americans who are disproportionately affected by a pandemic may also be at increased risk of hypoxemia in the medical setting, which relies on devices for triaging patients.
The device emits red light from the user’s fingertips and can give misleading measurements if the skin is dark. Michael Sjoding, a pulmonologist who is the lead author of this study, Said NPR.
He said errors occur about three times as often as black patients.
Inaccurate measurements are “less common, but given the frequency with which these measurements are made, there’s a 12% chance that if they’re wrong, it’s not really likely to affect them. I’m worried, “he said.
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