A week ago I did a home sleep study. Went in yesterday for results, which showed O2 level down to 85%, and AHI 6.5 (about 44 events). They sent me home with an autopap to use for a week. It came with a nasal mask. Next Monday I bring it back and they'll read the data off the card, presumably to prescribe (and/or program) another CPAP.
First thing I did after I set it up at home was download SleepyHead. :-)
So, last night. The nasal mask was pretty comfortable, but the sound of my own breathing kept me awake, plus I kept getting little leaks here and there. Air blowing into my eyes. So it took a long time to fall asleep (and I usually fall asleep in less than a minute), and I kept waking to readjust the mask.
This morning I popped the SD card into my computer and let SleepyHead do its thing. It showed AHI 3.0, with I think 18 events during the night. One of them was a 2+ minute episode of Cheyne-Stokes breathing. I'd never heard of that one; what I've read about it so far is alarming, but I hoping just one episode's not a big problem?
One thing I'm wondering is about oximetry. The autopap is great in it way but it's not measuring O2, so how will the doctors be able to tell whether the APAP is really helping?