(09-13-2015, 11:39 PM)AshSF Wrote: The edema of soft tissue in our breathing apparatus goes down after successful xPAP therapy over 3-6 months. That may reduce your pressure needs (there is a paper in pubmed on this explaining how a 2nd titration after a few months of Cpap shows a lower required pressure).
My theory on mouth opening is that if the pressure applied is just a bit More than the critical pressure to keep the airway open, it blows open the mouth gate. In my case, I can even open my mouth while breathing nasally thru my P10 pillows and no air escapes thru the mouth.
You can try to correlate if the leak is happening at a higher pressure (and maybe that threshold has changed over time ). You may want to tighten your top end of the range a bit (if AHI permits) and evaluate.
And you can never leave the P10 cult once you join. Resistance is futile!!
Interesting about the pressure changing after a couple months of treatment. I wonder if the fact that I've lost 22 lb in the past couple of months has played into that as well. Perhaps I do need a lower starting pressure now.
My pressure band is pretty tight. I start at 10 and through the night can see myself work up to a max of about 11. I didn't see a lot of correlation between the pressure and the the starting of large mouth leaks.
I've definitely got room on the AHI front; I'm running at most 1.5.
I'll drop my sleep doctor an email and see what she thinks.