I know how it feels ,Kate. I was prescribed CPAP but simply could not use it once I got home. I could not breath 'out' against the pressure. The Shop was quite rude and insisted I was not trying hard enough. I ended up returning it as I only had that option for 2 weeks.

Later when I saw my Respiratory Dr he just said that he was not surprised and as my sleep apnoea was only mild anyway ( despite REM being severe ) he did not write another script for bi-pap - saying it costs 2x as much and was not necessary - would not help etc

I must say though - since starting Salbutamol - that my night time sleep seems more refreshing. I wake up next day feeling less sleepy and foggy and giddy. I am not sure if this means my REM sleep is improving ? I only had O2 measured during my test - have no idea what CO2 levels were but now am wondering about a few things.