My AHI last night was about 20 while trying out an Icon nasal pillow type mask. Based on a table in the mask manual, the reported leakage of 28 was below what one would expect with that mask (and I didn't notice leaks). So what should I conclude from this?
--If mouth breathing with nasal pillows is not recorded as a leak by the Icon, then maybe mouth breathing was the problem.
--Or perhaps the fixed CPAP pressure of 9 is not sufficient when using nasal pillows (perhaps my nasal passages are to narrow, etc). I was using a full face mask when the pressure level of 9 was determined during my sleep study. Does the "required" pressure vary with mask type assuming no leakage problem?
No, the pressure does not matter with the type of mask. On some wee level it might but not enough to be a problem (unless the user is very anal and loves details). The full face mask was still pushing air down the same nose.
As for the leaks, not sure. I would assume mouth breathing would be counted as a leak. How would it determine the difference? Did you have a dry mouth or really bad morning breath?