FWIW, I have an Airsense 10 Autoset as well as the Mini. For me the Mini is no substitute. Does not work anything like the larger model.
I also tend to look at the distribution of events using Sleepyhead. I often have a lot of CAs and often those are clustered over a short period of time ( say 20-45) minutes near the end of the night whereas the rest of the night was pretty interruption free. That's the problem with AHI averages. You may not realize that most of the night you slept quite well.
Since the above was written I've enjoyed a good run of improved AHI's running in the approx 1.3 - 2.5 range. I still have "off" nights, never exactly sure why. Still, my off nights are considered "mild SA" according to the AHI tables.
When I do have off nights though, they tend to be as described above in my earlier post in the sense that I enjoy relatively undisturbed sleep for 5.x of the 6.x or so hours I tend to sleep, with a flurry of CAs in the last 40-60 minutes that raise say a 1.3 for the 5 hr segment to say a 3.0 for the night (i.e. the majority of the interrupts occurring as I drift in and out of sleep at the end of the night, never returning to deeper sleep).
Interesting you say this as what you describe is along the lines of what I was thinking of trying based on my own data analysis and what I have researched regarding CSA and air pressure. Thank you for sharing this.
Are you sure you are mouth breather? I thought I was, initially got a full mask, hated it, and was about to throw in the towel. I decided to give a nose pillow mask a try. I found it pretty much stuck my tongue in place and kept my mouth closed letting me breathe just thru nose. Might be worth trying before giving up.
Yes, we appear to have a lot of similarities.
I too am currently using an AirSense 10 AutoSet.
I also take a BP med although mine is an Ace Inhibitor.
On occasion, maybe a handful over past the 8 months I've exhibited one brief episode of CSR during a night.
I am also under the care of a cardiologist, monitoring a minor MVP. Otherwise my recent tests revealed no other obvious cardiovascular issues.
Agree that at current AHI levels, while a drag, I am unlikely to get moved to an ASV.
Great info and comments. Personally I had to bug my 65 year old GP for a long time before he finally ordered a sleep test for me.
I was diagnosed with severe apnea. When I began therapy I was given a full face mask. I hated it and was on brink of abandoning therapy. Instead I tried a nose pillow mask. I adapted to it quickly.
While I still have "bad nights", and I have complex apnea which is difficult to manage, I no longer nap every day and on most mornings I awaken feeling fresh and alert. For me, it's been a game changer.
Typically, of late, my composite AHI has been averaging between 3 and 4 (occasionally lower, occasionally as high as 7) over about 6 hours of sleep which seems to work well for me.
Generally my events are scattered thru the night with some stretches of early sleep being largely uninterrupted.
The overall AHI has typically consisted of a mix of obstructive, central, and hypopnea events with the CA component usually being the largest.
The CAs tend to mostly appear: (a) just as I am dropping off to sleep, (b) as I try to fall back asleep after waking during the night, and (c) most often in a flurry of events just prior to getting up (say during last 40m or so of night). These flurries can often consist of 10 or 12 events strung together over a brief period of a few minutes.
There seems to be a "handoff" issue from my waking breathing to my sleeping breathing in the patterns I've observed using Sleepyhead to view the data.
Does this help?
I have been a CPAP user since last fall following my diagnosis of severe SA with a primary Central Sleep Apnea component.
I find my Obstructive Sleep Apnea to be pretty well controlled but the Central SA is a real wildcard. Never know what to expect.
I am interested in connecting with anyone who has a similar profile to compare notes.
I had begun to wonder about this as well. Felt my hearing was deteriorating with cpap use. There appears to be evidence this is possible. The following is pretty clinically dense reading but a casual internet search will provide others as well.