Does anyone know what advance stage COPD is? The doctor didn't list a stage, just that it is advanced. My Mother is currently in the hospital with it and she has congestive heart failure and pnemonia that they cant clear (she has been there a month now). When she went to the hospital her oxygen level was in the 60s. They have it in the low 90s but they cant keep it there. It keeps dropping, especially if she gets out of bed. They want to send her to rehab, but the doctors aren't saying if she can become functional again. she never had treatment for COPD. She had ot for many years and never told us. I guess I am just wondering what everyones experience is with this. I am just not sure if she did too much damage of if she is able to get better at this point. Thanks in advance for any replies.