Finally got an ASV but the machine isn't showing any CA data, does that mean it's 0?

Hey all,

I’ve been stuck using a CPAP for the last year and it’s basically never worked for me - kept getting tons of central apneas every night and my doctor didn’t do anything about it nor would he listen to me complain about Central Apneas; I even did a sleep study with him and while ignoring my Central Apneas, he kept me on CPAP Oh-jeez OSCAR always showed central apneas around 19 (see screenshot).

I independently purchased my own ASV machine (after wasting a year) on May 17th and immediately my central apneas went to zero. My AHI overall dropped to <5. But now, when I look at my Oscar graphs, the “central apnea” row is just blank. Like, it literally doesn’t show any central apneas at all like before - just nothing. Before, it would register CAs and show them in that row, now it’s just zeroes or not listed at all. I can’t turn them on or off, there’s no option; I have CA/Central Apneas check in all the view settings.

Anyone know why Oscar isn’t showing central apneas anymore with the ASV? Does that mean they're at 0? The rows on the graph are: first is overall AHI, second is central apnea, third is hypopnea. Just wondering why CAs disappeared completely—do they get labeled differently, or does ASV just not record them the same way?

Side note - my need for sleep remains at needing 10 hours to not be tired, is it my settings or something?


I'm open to any feedback or help, please! Thank you! <3

ResMed ASV machines don't flag OAs or central apneas at all because it doesn't do the FOT thing to tell a central from an obstructive apnea. Instead it dumps both in the Unknown/unclassified apnea category.

I see a handful of UA flags....we don't know if they are central or obstructive.

So you get UAs and hyponeas...and that's it.

Now even if all the UAs flagged were centrals....you aren't having very many of them.

So OSCAR isn't showing any because the machine isn't recording/reporting any centrals (or OAs).
Remember OSCAR only shows what the machine reports. OSCAR doesn't do the determination....the machine does.