A retrospective analysis of over 7,000 patients with COVID-19 found that pulse oximeter devices — tools that measure oxygen levels in the blood and that are used in virtually every U.S. hospital — ...

A pulse oximeter measures blood oxygen levels at home and in healthcare settings. Abnormally low readings on a pulse oximeter might require medical care, especially if they are below 92%. Skin color ...

Smartwatches can measure everything from heart rate to sleep quality, but one health metric has become particularly relevant over the past two years: blood oxygen saturation. Two of the world's ...