I have been on CPAP for a little over a month with no good results yet, one visit about 2 weeks in to my provider which resulted in some blah blah blah an adjustment to my machine (DreamStation 2 Auto Advanced) that was not effective. I since have found your forum and installed an SD card into my machine -- thank you so much for existing!!! My questions center on looking at my detailed results for possible postional apnea, a concern for how many CA events I am getting (my doctor claims these "usually clear up in the first few months"), and differences in results when I switch out my full face mask for a nasal pillow mask.
Exhibit A is my results from a few days ago, when I wore my usual full face mask and got really bad sleep, was tired all day Sunday.
I have a Garmin Forerunner 945 sports watch with Pulse-ox and HRV sensors that includes what Garmin calls a "Body Battery" -- a charge level indicator for how ready I am for my next workout (I am a marathon runner). After this night, it only charged up to 29% (from 5% when I went to sleep), and showed lots of "stress" during the night. I noticed a similatiry with a post on here that recommended a SCC device or similar to correct chin drop that would result in positional apnea events, and it looked kind of like my chart. I was encouraged that there were periods of time without apnea events, so I hope that using an SCC or similar device will maybe clear this part of it up.
Again, this was with my full face mask, that I obtained after a few days using a nasal pillow mask and noticing worse AHI than my sleep study. As an aside, my sleep study noted several events where I was not breathing for over 2 minutes, which I find scary, and it is why I started pursuing CPAP therapy. I feel like these events are not accurately accounted for in a number like AHI since one event can last for so long, you can only fit so many 2 minute intervals into an hour, but even 20 of these events would mean I wasn't breathing for 40 minutes out of the hour!!! Anyway, even with CPAP, some of my events last longer than one minute, and the DreamStation 2 seemingly tries to jolt me out of them by applying "pressure pulses" every 10 seconds.
Here is Exhibit B from the following night (last night) where I initially switched to my nasal pillow mask (first for a nap to try it out around 5pm, and then for the first 2 hours overnight). After that first 2 hours, I was feeling like I would never be able to sleep with it on, so I took it off and slept with no mask until just before 6am when I switched in my full face mask again.
For the first segment here, as I was just experimenting, I did not tape my mouth shut, but I did start out with mouth tape when I tried to go to sleep for the night (middle session). Here, in looking at the data, I see many more CA events than the previous night, even after finally switching to full face, and I don't know how concerned to be about these. Zooming in it doesn't look to me like CSR, but maybe I need an ASV if these continue after I make my positional adjustments?
I strongly prefer to sleep on my back for proper spinal alignment, but I have turned on my side in order to sleep when I can't fall asleep on my back. I haven't yet learned how to stop mouth breathing and although I have never noticed my mouth being very dry before starting CPAP, now every morning I wake up with a dry mouth. I am trying the "tongue trick" pointed out here to try and move in the direction of nasal only breathing, and anticipate if I get a SCC device, I may be able to get closer.
Thank you for any help! I'm newly disgnosed and am tired of racing my marathons already tired out!