S8 auto setting question . . .

Now in the fine tuning process. Pressure is set to a 11-15 range. One week average pressure has been 11.4, AI=0, HI=3.9 for a AHI of 3.9. Leak rate has averaged .18L/sec. Had my card read yesterday and high pressure has not gone above 14.5. Numbers are very close to my five year old CPAP Rx of 12.
Since AHI is under 5.0 do I stop chasing "perfect" or bump the minimum pressure to 11.6 and see what happens? I can see this becoming like regulating my Long Case clock, how close to perfect can you actually come?

The question i would ask myself is: Did my AHI ever exceed 5 for any given night? If yes, then I definitely would still be tinkering. If no, I would be fairly content.

Having said that, I still occasionally make adjustments, and my AHI is about 2.4. I don't do it because I don't feel good, I'm just curious by nature.

There are several people here who say they can feel the difference between, for example, AHI's of 2 & 3 or 1 & 2, etc. I'm not one of them.

Ultimately, it's your choice. The numbers are in the "normal range". Your leak rate has plenty room for improvement, so there's always tinkering you could do.

The preceding was my opinion. Others will, and should, differ

RiverDave

Since it's a resmed machine, I'd be happy with the data you're seeing. Your week's average is showing no apneas and a hypopnea index of 3.9. That hypopnea index would probably be reported as half that if you'd been using a Respironics or Puritan Bennett autopap.

That doesn't mean that another brand deals with hypopneas better or that treatment would be more effective with a lower "hypopnea index" or that one machine or another recognizes hypopneas better. It's simply a difference in the way each of the different manufacturers machines define and report the degree of flow limitation that that manufacturer thinks should be called "hypopnea."

I wouldn't worry one whit about a hypopnea index of even 5 or 6 with a resmed machine. That would very likely have been a hypopnea index of 2 or 3 with another brand. Again...my saying that doesn't mean the treatment would have been a bit better with a machine giving a lower hypopnea index.

I got equally good treatment (based on how I felt each morning) with all three major manufacturers' autopaps regardless of the data chalking up double or triple the amount of "hypopneas" any time I used a resmed machine compared to same setup and settings with a Respironics or Puritant Bennett autopap. I just mentally cut the resmed hypopnea index in half.

You've gotten a VERY low hypopnea index for the week, hobbs...by ANY machine's measure. If you're gonna tweak anything, tweak your mind to mentally cut the hypopnea index in half for a resmed machine. See what a good result you got? And you didn't have to change the pressure at all!!