The head RRT at my DME provider's called me today. Their "mask man" suggested that he contact me since I had been talking to the "mask man" about mask issues and mentioned that I was scheduled for a bi-level re-titration.
We discussed the various masks I've tried and which I've liked, what I didn't like about some, etc. One thing we discussed was the pressure sometimes causing what some call "chipmunk cheeks" where the air builds up in our mouth and then escapes thru our lips.
He said that is almost always caused by not being able to exhale all the air. That is not a pressure setting so much as it is the need for pressure relief only on exhalation. Rather than adjusting pressure we should FIRST increase our EPR or C-Flex expiration pressure relief so that there is LESS PRESSURE TO BREATHE OUT AGAINST.
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