So wondering what I should have done. I was at my 3rd clinical, first semester nursing in a long term care unit. I was told to go practice taking vitals. Not too many nurses or clients were around because they were at a Halloween party. I tried taking radial pulse and O2 levels on a nonverbal man, and they were both very low. Radial pulse of 48, and his finger said it had 69% O2. I couldn't believe it (and this device has always been reasonable) so took it again on another finger and it was similar. No nurse or instructor in sight to tell. His hands were very cold. I wondered if he had peripheral vascular disease and this was normal for him, and not maybe a big deal? When I saw my instructor at post conference I told him, and he seemed to think it was unbelievable, and must be my device. He added that I should take it on an ear lobe next time, and said that pulse can vary and I should have checked what it was normally (but he wasn't my patient and I didn't know his name or room number to check). When I asked my anatomy professor later that day since we were talking about a cadaver who had terrible circulation, she seemed to think I should have immediately notified some one who worked there. What would you have done?