T818,
The 2022, sleep studies are missing pages.
Thursday Nov Nov 17, may be positional apnea. Read this link.
http://www.apneaboard.com/wiki/index.php...cal_Collar
Your 2018 study gave a pressure of 8, that would be 8 cm with EPR off.
I don't know why you always have fixed pressure.
I would try for starters:
Auto
EPR 3
Minimum pressure: 7 cm.
Maximum pressure: 7 cm
Flow limitation can disturb sleep.
Things to try for deeper sleep:
-Cover eyes. You should not be able to dee your hand in front of your face, if you can, it is to bright.
-It say full face mask. A mask with a lot of volume may help. Mine made a big difference.
-A weighted blanket or one folded on your torso.
Even with a full mask work on keeping your mouth closed. I found it was not the pressure that cause the bloating, but opening my mouth.
If you do open your mouth even to exhale, read this:
http://www.apneaboard.com/wiki/index.php..._Breathing