Taking a big breath before CA event

[larch]

I'm just starting with a CPAP machine and noticed some patterns that look odd to me. The machine (Airsense 10 Autoset) is recording one or two clear airway events per hour, which I understand isn't a big deal, but it looks like before each CA event, I'm taking a much larger than normal breath. I understood central apneas were generally your nervous system not sending signals to breathe, but this looks like something different. I just wondered if anyone had seen this kind of pattern before and if it was normal or not. Examples attached.
   
   
   
My home sleep study showed 20 AHI, mostly hypopneas (not classified as central or obstructive), with about one central apnea and 0.5 obstructive apnea per hour. It also showed a whole lot of central apneas and hypopneas while I was actually lying in bed awake — not sure what that might mean, why would my oxygen saturation be dropping when awake?

[Gideon]

That is most likely you holding your breath when changing sleeping positions.

sats can drop because of irregular awake breathing.

[Dog Slobber]

The rule of thumb I use for both CAs and OAs is: If there is volatility before the cessation of breathing, it's probably a false positive.