As an emergency medicine physician, Dr. Owais Durrani sees this issue regularly first-hand: When he clamps a pulse oximeter onto a patient's fingertip to measure their blood oxygen levels, the small ...

(CNN) — Scientists have long known that pulse oximeters are less accurate when used for people with dark skin tones – and now, a new report offers some insight into just how much more inaccurate these ...

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Pulse oximeters work by sending light beams through someone’s finger to estimate the oxygen saturation of their blood and their pulse rate. Ongoing research has found that if these devices are not ...