Philips is touting a validation study of its contact-free peripheral artery oxygen saturation (SpO2) detection technology. Published in journal Anesthesia & Analgesia, the paper reviews a camera-based system that measures tiny changes in light reflecting from the skin. It’s accurate enough to notice a change in oxygenation of blood near the surface of the skin, but one concern has been the ability to calibrate such devices to provide clinical level accuracy.
