I had a patient yesterday who had used O2 eariler in the day. His :eek: O2sats went down to 84%. I put up the head of the bed and checked it again and it did not go up. At that point I got the nasal canula off the wall, turned up to one liter and put it on him. I was told after by my instructor that That had to be doctored ordered to put on and to take off. Is that true?