I've been using a CPAP machine for over a year now. I wake up several times a night - more than I did before having the machine - but often attribute it to just being uncomfortable with the mask since I generally do feel better and think that the quality of my sleep time is better. There are times, however, that I feel like I had been experiencing apneas and it makes me wonder whether the pressure is optimal.
I can see why a low pressure wouldn't be good, but I understand a pressure that is too high is ineffective also. Is that correct? Why would this be? Also, is it true that since I dream more I must be getting more recuperative sleep because it is proof that I have reached REM? Is there a way to determine that I am still having apneas without having to endure another sleep study?