(08-06-2024, 04:11 AM)Sleeptechmaster Wrote: I am new here but i have analized a lot of your nights that you have posted and have a lot of experience. It looks like when you are going into REM your auto pressure is quickly hitting maximum but then also very quickly falling. Hitting a pressure of 20 with nasal pillows is a lot so your mouth may be opening briefly waking you up and kicking you out of REM. If that pressure was needed for REM you would typically see it stay at that pressure for maybe 20-30 minutes instead of sharply increase and then fall. You could be being starved of REM due to the high pressure you have set. All of your studies show an AHI well inside of the normal levels. Your mouth opening and closing many times a night could be fragmenting your sleep stages and you might not be aware of it at all. If you wake up for 1 second and fall back to sleep 1 second later there will be no memory of it. I would test with lower maximum pressures like 16. Your nasal pillows might not support that high maximum pressure you are briefly recieving and may be counter productive. A lower minimum pressure might also help with comfort as all of your AHI increases appear to be REM related. You will be forced to exert less energy breathing during stage 3 sleep and stage 2 so your daytime energy could improve.