I use both an oral device TAP II and a full face mask with a respirator (auto Intellipap) set for a range of 4 to 12. I can not use the TAP alone because I get too much saliva and cough and the readings on the respirator are much better when I add the TAP. The readings on the machine indicate I am being successfully treated, but the next day I still experience great sleepiness. I had a recent sleep study in which the setting was upped from 7 to 12 and the CPAP was changed to APAP. Last week I slept with an oximeter (I had only only one low reading lasting a few seconds). When sleeping untreated my wife observed that I seem not to be snoring as much I used to and instead she feels like I may be having hypopneas. In addition, my wife says my feet occasionally jerk in the night. I am already taking Sinemet for a non-specific Parkinsonism that has no observable trembles. Are there any suggestions on why my treatment is not successful?
If you are still sleepy after being treated with CPAP and/or a sleep apnea oral appliance device, you should definitely talk to your doc. One possibility is that your sleep apnea got worse and that you need an increase in pressure/or adjustment to your oral appliance.
Of course, there are so many other things that can cause daytime sleepiness too. You have to rule out the ‘easy’ things first. Good luck.