Apnea while awake, not while asleep?

[herenthere]

Last night I was awake for an entire 85 minute session (largely due to my wife's fitfulness). During that session I had 24 events (18 CA, 4 H, 2 OA, for AHI of 16.7) according to my machine (ResMed AirSense 10 Autoset). At times I was intentionally trying to modulate my breathing, but most times just relaxing, and I was not aware of any apnea events. By contrast, during the six and a half hours I was sleeping, I had a total of 9 events (8 CA, 1 H for AHI of 1.4). My mean SpO2 for the night was 94 (including one hour sleep time not on PAP). During the CA events my SpO2 did drop, but hardly ever lower than 90. Does this session fall into the category of SWJ, even though I was completely awake? Could the machine be misinterpreting my naturally shallow breathing as events? The mild SpO2 drops were real. I have had similar experiences on other nights.

[EddyDee]

CPAP machines are designed to treat *sleep* apnea, which is predicated on the assumption that you are asleep. But the machine cannot really tell if you are asleep or not, so it just assumes that you are. That's why it recognizes your modulated breathing as CAs.

Actually the auto ramp mode on the ResMed Autoset does attempt to figure out when you fall asleep, and I find it's helpful from stopping it going crazy when I do meditation breathing after getting into bed. You might want to try it too.

However that's only while you are falling asleep. Once the machine has decided that you've fallen asleep then if you wake up it will not recognize that unless you press the stop button, in which case when you restart the whole thing starts all over again.

[herenthere]

Thanks, I have used the ramp setting but turned it off. Per your suggestion, I might play with it a bit now.