Pulse Oximetry

The off phase is so that it can compare with the tissues that are not pulsatile. So if you've got why work in a unit where we have single ventricle babies, and they're often very blue, so what happens to the pulse oximeter accuracy once you go below 75%? It's less accurate. OK. You mentioned B-lam but slow, which law is operative there when you're looking at light going through skin being absorbed? What's varying? Well, I don't know. Do you know what that ratio is called? What the modulation ratio is? The calibration graph was derived from measuring oxidant saturations of healthy volunteers. And they were asked to breathe