We had an interesting one just recently. Guy was in the room waiting to be seen, nurse walks in, walks right back out and says "He's dead". This was a patient that as far as anyone knew, was alive 30 minutes ago, and this was just a routine outpatient visit. There was no doubt he was dead, he had no pulse, wasn't breathing, and was blue. My colleague went to the nursing desk and asked the person who wheeled him back "Was he alive?" lady says "I assume he was. He was quiet, but most old people aren't very talkative". At that point we figured he was probably dead in the waiting room. So he asked the receptionist and she said more or less the same thing "He just sat there, he didn't make any noise, but that isn't unusual". So now we think he arrived her by med. transport dead. So we got on the phone to the med transport and asked them to get the person who transported him on the phone. They patched us into their radio and we asked about the transport. The guy said "He was absolutely alive when I picked him up. He was in the back and just sat there for the most part. About half way to the appointment he made a noise of some kind and just kind of leaned back. We didn't think anything of it, seniors make all kinds of noises. He didn't say anything after that." That solved the mystery. He had apparently experienced a cardiac arrest or a massive stroke during transport and was subsequently off-loaded by medical transport, sat in the waiting room, and was wheeled back to the examination room, and no one happened to notice he was dead. They just thought he was a nice, quiet old man.