I've been working with the PA in my sleep doctor's office off and on for four solid months on this problem.
So report the problem to your sleep doctor's office and ask to speak with a nurse, a PA, or the doc about managing the aerophagia (that's what it's called).
It bothers some folks more than others.
Somethings that may help:
Don't eat anything anywhere close to bedtime. [For me, I can't seem to eat within about 5 hours of bedtime.]
Smaller than normal supper. Less spicy than normal supper (for me.)
Cutting back on caffeine in the afternoon and evening. No alcohol at dinner or in the evening.
Consider being tested for GERD. (I haven't yet done this.) Even if you don't have GERD, many of the suggestions for dealing with GERD may help. Do a search for GERD on standard reputable medical sites and you'll come up with patient self-help guidelines for managing GERD.
See if pressure can be reduced---will the doctor authorize a week of autotitration?
A change in sleeping position may help. What position do you sleep in?
Don't be ashamed of burping and farting in the morning---if you can---that's the EASIEST way to relieve the pain. The air is largely odorless since it's room air.
OTC meds like Beeno or Gas-X to prevent or relieve gas may help. But read the instructions carefully about how LONG you can take them.
current settings Min EPAP = 4, Max IPAP = 8 and Rise time = 3
8/1/2010 sleep study results:
AHI = 3.9 [AHI = (#OA +#CA + #H w/desat) per hour]
RDI = 23.4 [RDI = (#OA +CA + #H w/desat + #H w/arousal) per hour]
Dx: Moderate OSA