Hello Colleen, I am not sure I am posting correctly, I asked a question and no one seemed to notice it, or maybe it takes quite a while on here I am not yet familiar. I had a diagnosis of COPD emphysema the entire story is too long to insert here. Last week at a routine visit to my pulmonary Dr. my spiro went to 29 which I am told is critical. I was given the walk test and dropped to 88 rather rapidly. He gave me the order of oxygen 24/7 which I had only been using it at night. With a chest wall surgery in the past that left my lung herniated and then herniation repair surgery I am wondering if my surgical mesh could be causing issues since I went from okay for some length of time to critical,the last time I saw pulmonary in Mayo they about partially paralyzed diaphragm but I balked at the ENG test being performed on my diaphragm. I am now ready to submit to that test to see if that could be part of my problem. I plan to call mayo or send a message via portal to my pulmonary Dr. on Monday. Anyone have words of advice, I feel pretty at sea to be put on oxygen 24/7 I am not yet 60 and never smoked. Any advice would be appreciated.