I am a new APAP user; using it for about a week.
Machine is Redmed S8 Autoset II
Settings:  Autoset.  Min=7.  MAx=9.
I'm waking up more than 4 times a night, with discomfort in the stomach in the morning.  I'm also waking up tired in the morning.
Should I continue using the APAP at this settings and hope that I get used to it ?
What is the reason for the discomfort in the stomach, the high pressure ?   Or the variation in the pressure from 7 to 9 ?

Result of last few nights:  95% pressure = 9,  AHI of 2.6 to 5.9.  Leak was ok (between 0.22 to 0.28 L/s).

I would appreciate any insights or suggestions.

You've got a great APAP there. The stomach discomfort is most likely aerophagia (air swallowing). This could be due to silent reflux. It could be due to your just needing to get acclimated to CPAP therapy. You might try setting the EPR to 2 or even 3 for a week to see if that brings any relief. Then you can reduce the EPR to 2 and see how you do w/that pressure relief for a week. If you continue to do okay w/o the stomach discomfort then reduce EPR to 1 for a week. MOST of us eventually just turn EPR off after we've had time to adjust to CPAP therapy but it can be a WONDERFUL assist in getting acclimated. As can Ramp which a lot of us also end up eventually turning off.

Given the correct Mask Selection, your Resmed can compensate quite nicely for up to 0.4 L/s reported Leak rate. Bear in mind your device raises pressure to compensate for the leaks. The 95% reported pressure (or Leak) just means that that is the pressure AT OR BELOW which you spent 95% of the night. NOT the pressure at which you spent the entire night.


_________________
PR SystemOne BPAP Auto w/Bi-Flex & Humidifier, EncorePro 2.2, ConTec CMS-50D+ oximeter
BackUp: Resmed VPAP Auto. Humidaire 3i, ProBasics Zzz-Mask full face, ResScan 3.10, S8 ResLink, Embla oximeter.

Has anyone heard about the impact of EPR on the actual pressure during inhalation.  Does it reduce the inhalation pressure in any way ?

If I do not hear from anyone else, I'll try the suggestion to set the EPR to 2.  

Thank you.

No, it doesn't reduce inhalation pressure except that perhaps the START of inhalation might be a SHADE lower due to the transition from EPR pressure to set pressure.

It does, hower, reduce the REPORTED pressure for the night since we spend roughly half the night exhaling and half the night inhaling (actually I think I remember reading 60%/40% but I'm not going to pick hairs here).


_________________
PR SystemOne BPAP Auto w/Bi-Flex & Humidifier, EncorePro 2.2, ConTec CMS-50D+ oximeter
BackUp: Resmed VPAP Auto. Humidaire 3i, ProBasics Zzz-Mask full face, ResScan 3.10, S8 ResLink, Embla oximeter.

I was wondering about that.   I appreciate the clarification.

If I may ...  I have somewhat different questions ...
In my ResMed (S8 Autoset II) summary report, the Events Chart has numbers associated with the Apneas but no numbers associated with hypopnea.
a)  what do those numbers mean ?   number of secs for the apnea events ?
b)  why are there no numbers associated with the hynopnea events ?

Many thanks in advance.

You guessed right. The numbers indicate the length of the apnea. I don't know why they don't "time" the hypopneas too - but the way the hyopneas are graphed is each time there is an hyopnea the graph takes a step up, at the end of one hour it drops back down to xero and starts counting hypopneas again, each step is an hypopnea, at the end of the hour, drops to xero again.

In the graph w/the apneas and hypopneas you can get a rough idea of the length of one hypopnea vs another and that's about as close as you are going to get to how long any hypopnea was.


_________________
PR SystemOne BPAP Auto w/Bi-Flex & Humidifier, EncorePro 2.2, ConTec CMS-50D+ oximeter
BackUp: Resmed VPAP Auto. Humidaire 3i, ProBasics Zzz-Mask full face, ResScan 3.10, S8 ResLink, Embla oximeter.

Many many thanks for the info.   I appreciate it.