He had several visitors at the time, and none of them really paid attention. But they all said they couldn’t arouse him enough to carry on a conversation. Maybe it was just the right time for him to go home. Maybe he did not even have a pulse ox on. Before he went for the arteriogram, he was not using oxygen. The whole thing was a mess and very suspicious. If a seasoned nurse had been there, I doubt It would have been ignored. Thanks for your comments 😊