My DH, age 77, has had lung cancer, in remission, and is now stage 4 copd. Just in the last month, every time he moves, his sat levels go to 74 or so and it takes a long time to get it backup. His concentrator is set at about 6 1/2 and, when his levels get very low, he'll use his portable bottle set at 4 at the same time. Mentally he seems ok, but has a hard time eating enough to maintain weight. Getting back and forth to the dr is hard for both of us. How long can this continue, do you think? He doesn't want hospice yet and can get to the bathroom or something to eat on his own while I'm at work. What signs do I watch for that we need hospice or that the end is near? What do I do if the end comes without hospice? Who do I call first? I'm so stressed and that's not helping us.