I've noticed alot of our ER nurses putting single patient use (finger) oximetry probes and sticking them on patients foreheads. I can see using it on the toes or ear lobes or even the bridge of the nose. But the forehead?? What's the science behind that, the light going into the forehead, but how is it deflected to the reciever part of the probe, unless the patient has a metal plate in his head???
remembering my old Days in Nellcor, the managment hates the forehead sensor as it was the one holds forever and had good measuring. go for the foreheadsensor,even it is more expensiv it pays himself off over time