(04-24-2013, 10:40 AM)racprops Wrote: So tonight I will return to my recliner and see.
Has anyone found they do better in a near chair like sleep position?
My heart surgery caused my sleeping in my recliner, it is a side effect from this surgery, and while I waited for my sleep studies we SEEMED to see less apneas when I sleep in a more upright position.
Yes, it is well known that obstructive apneas happen less often when our head is elevated, as in a recliner, compared to in a bed flat on our back. I suggest sleeping in the recliner until your therapy is more successful.
Here were the original settings you reported your machine had when you received it:
Min EPAP: 10.0
Max EPAP: 15.0
Min Pressure Support: 0.0
Max Pressure Support: 15.0
Max Pressure: 25.0
Flex Setting: 2
Backup Rate: Auto
You said you changed the pressure to 9/15.
I suppose the 9 was the EPAPmin. What was the 15? EPAPmax, or what? IPAPmax?
I hope you did not set the IPAPmax to 15. If you did, your machine will not be able to adequately treat your central apneas. In any case, I recommend putting the IPAPmax back to 25, the doctor's original prescription. (The machine will never go there unless it needs to, to prevent central apneas.)
From the SleepyHead data you posted, it looks like your machine is not adjusting the Pressure Support high enough to treat your centrals. You can see from the bottom two plots, "Mask Pressure" and "Pressure" that around 3:00 your EPAP adjusted itself to around 13 (to treat OAs). At this time you are having many CAs (this is shown in the Event Flags time plot) but the PS (which is the difference between lower and upper pressures) is small, just a few cmH2O. To treat the CAs the PS would sometimes need to go nearly to 10 cmH2O, but for some reason it doesn't. (Maybe this is somehow related to the small PSmin you are using, since you reported earlier that the machine reponded to your breathing more strongly when the PSmin was set to 2.)
In the statistics section it says your PSmin was 13, PSmedian was 39, PS95% was 68, and PSmax was 90. This is obviously impossible and looks like a SleepyHead bug. None of the other statistics look unreasonable or obviously impossible.
Keep an eye on your minimum respiratory rate (8 breaths per minute). That is a little low. Probably should be closer to 10 or 12.
Does SleepyHead allow you to zoom in on the time plots to see more detail?