(06-28-2014 10:33 AM)Sleepster Wrote: First and foremost, please don't freak out over this data. To score an AHI of 7.0 simply means that your breathing rate fell below some amount for a period of at least 10 seconds on an average of 7.0 times per hour.
It will drop as you adapt to CPAP therapy. If it doesn't then we can make adjustments, but you should be celebrating the fact that your data looks as good as it does, and that you are able to sleep at all with the CPAP machine.
The danger of mouth-leaking is that the machine can no longer maintain the pressure splint needed to keep your airway open and it will collapse just as if you had no CPAP machine at all.
Thank you for helping me. That said, I am confused.
Re adapting to CPAP - I have been using CPAP for >10 years. Until 6 months ago, I was on an older CPAP-only machine. In January, I got the S9 and H5i, and started using the S9 as APAP, and looked at my night's data every morning. My AHI has consistently been below 5, averaging 2.8 with centrals 1.8. Then, something changed, and for the past month, I have averaged AHI of 7.1 with centrals 5.6.
I understand many people would be pleased with my recent (worse) data, but it seems something has to account for the rather sudden increase in my centrals. I'm not freaked out, at all. Yet I would like to see if I can determine what happened to account for the lesser performance, to be able to get back to AHIs <5.
There have been no environmental changes to my knowledge -- no new bed, no new pet, etc.
Retired_Guy suggested two things (I've posted some ResScan graphs earlier in the thread) -- to reduce my pressure range from 9-14 to 9-12, and a chin strap. I've made those changes for the past 4 or so nights, and nothing has improved so far. The past two nights, my leaks were 3-4/min, and last night, my AHI was 16.6 with centrals still dominating, at 12.9. I'm content to give it m,ore time, to see if these changes can reduce centrals, but from what I've read, 3-4 nights may be a reasonable length of trial.
Throughout this whole time, during good and bad (i.e., past month), my actual pressure (95%) has remained unchanged and without much variation - always averaging somewhere in the 11-2 range.
I've used the chin strap to test whether there is mouth leaking that may account for the statistical increase in centrals. That is why I wonder if the past two nights of rather low leak rates could possibly indicate that mouth leaking is not the reason for the change.
(06-28-2014 12:39 PM)retired_guy Wrote: I agree completely with Sleepster. I believe that the centrals especially will calm down rapidly as you adjust to the therapy. Often they seem to come up a little when you make changes, such as pressure increases. You might need to increase pressure a little bit to bring the OA's down a little more, but not right now. Right now you're doing just great, so focus on being comfortable and relaxed and enjoy some quality sleep for once.
What Sleepster says about the jaw falling back is what I experience when I put my chinstrap on too tightly. That, and I get a super bad pain in the whatever gland between my ear and my mouth. So gently works for me. Like I say, a reminder, not a commandment. And, it doesn't have to be perfect. When I look at my leak stats I mentally smooth away the high peaks and visually note that most of the night I was happily under 20. So I'm good with that.
Love your little cpap 'cause it's lovin you.
See note above to Sleepster.
I am comfortable going to bed, and don't have pessimistic views about how I'll do on any one night. I go to sleep with an open mind, not expecting anything in particular.
Thank you for hanging in there with me.