Apple iWatch to Use Optoelectronics to Monitor Heart Rate, Blood Oxygen Levels?

Apple iWatch to Use Optoelectronics to Monitor Heart Rate, Blood Oxygen Levels?

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Dr Hus - February 15, 2014 at 1:19am
It is not monitoring blood oxygen levels! That would be an invasive test called ABG (Arterial Bood Gas). Blood oxygen level is measured as a function of dissolved oxygen in the blood and depicted by its partial pressure. Apple will be monitoring oxygen saturation in a percent blood saturation. The two are not interchangeable. For example 100% O2 saturation can have 400 mmHg of dissolved O2, but also 200mmHg will show 100% saturation.