I had a great experience at the sleep study with the ResMed S9. They used pressures 6-9. The doc wrote the prescription for 6-14. My machine would automatically go to 14. It was too much and air was exhausinsting through my mouth. I had the pressure changed to 6-9, which is now tolerable, but the pressure still automatically goes to 9. My AH1s are less than 1. So, I cannot figure out why it was going up to 14 previously, or why it automatically goes to 9.
I tested the machine by putting it on and not going to sleep. I stayed wide awake reading a book. I'm assuming that being wide awake, I wouldn't have any apneas, and the pressure would stay at 6. Nope. The pressure automatically goes to 9.
So, it isn't auto titrating, or automatically adjusting. I've checked that it's on the "Autoset" setting.
Can anyone explain this to me?