[Pressure] Resmed S9 pressure

[dannymontani]

Sorry if this is a repeat question but I could not find an answer here.
My question is; what is a good beginning pressure for the S9 machine. I found it was at 12 and just dialed down to 8. I have had it for years at that preset pressure and would get terrible dry mouth even with a chin guard. Nose pillows used. Rarely used the machine because of this problem that is now solved, but I have to wonder about the lowest pressure that can be used. Dunno why none of my providers have ever said to set it at this setting. I can use it every night now. Tried at 9 and would start getting dry mouth and remove the device in the middle of the night. Thank you so much for any answers. Yes I will make an appointment with my provider soon after this Covid19 thing has cooled down.

[DeepBreathing]

G'day dannymontani. Welcome to Apnea Board.

Your simple question leads to a whole lot of other questions..

Have you had a diagnostic sleep test to establish your baseline apnea? If so what were the results?

Have you had a titration test, where you slept with the machine on and the technician adjusted the pressures? If so, there should have been a prescription issued - what does it say?

Final question, which particular model S9 do you have? The model name is printed right on the machine near the power button. It's usually something like Escape, Elite or AutoSet. It could be one of the VPAP series. It's important to know this as each machine has its own setup parameters.

Once you have all those answers, I'm going to suggest one thing further - download and install OSCAR. This is software to help analyse your results and optimise your therapy. Without it, we are largely guessing if we made any recommendations. You can find the Oscar links in my signature below, and make sure there is an SD card in your machine.

[dannymontani]

Thanks for your response to me.
I have not had a sleep test in 5 years, should go get another I suppose. I don't have the results.
Titration test, no.

I have a Resmed S9 autoset machine.
I have set the pressure to 8.4 finding that any higher gives me extreme drymouth so I tear it off during the night.
I see an AHI....using OSCAR.....thank you, of 0.29
Hypopnea  index of 0.10

I just would like to know what the lowest pressure is that I can safely run at. Lower than what I am at now would be great.
Thanks again.