How accurate is the AirSense 10/11 in detecting RERAs?

[PurpleOx]

I'm surprised they can detect them at all.

[Geer1]

Poor to the point it is questionable if they should even bother scoring them the way they do (due to people thinking they are scored remotely accurately).

These machines miss many that I would say are obvious RERAs (using only OSCAR/machine data) and if a person had EEG data I assume you would find many more that are not scored.

Some of the RERAs flagged do not obviously look like RERAs or occur post arousal etc as well so not only are they poor at accurately scoring RERAs a significant fraction of what they do score often is questionable.

[Sleeprider]

What the Resmed Autosets do well is record flow limitation, and if you know what you're doing you can probably pick out the RERA on the flow rate and flow limitation graphs. The actual flagged RERA events are very under-counted for most people that have 95% flow limitation above 0.2. or even 0.1.

[cyberfiche]

Sleeprider, from what I've seen googling and YouTubing, I totally agree that you can most likely manually identify RERAs In OSCAR. However, I think a lot of us users are pretty clueless in that regard - at least I am. Even though I've done a fair about of web diving to try to figure this out, I still can't really identify RERAs on an OSCAR chart. Do you have any links that clearly describe how to pick out RERAs from flow rate and flow limitation data? Or can you describe how to do it? Thanks!

- cyberfiche

[Sleeprider]

It's really easy to interpret once you know what to look for.  I should have collected some of the images members have posted here as examples and done a wiki.  My bad!  Any pattern of increasing flow limitation as indicated by flattened or downward sloping inspiratory peaks terminating in an arousal, generally visualized as an abrupt change in the volume or rate of respiration can be considered a likely RERA. In an older post I discussed how RERA is visualized in PSG and how that resembles the flow rate chart in Oscar. https://www.apneaboard.com/forums/Thread...#pid194268  There are many threads that can be found by searching the forum. Here is another one with some good interpretation by Gideon and I concerning flow limits and arousals. https://www.apneaboard.com/forums/Thread...in-a-panic



In this thread, you can see an example of the "classic RERA" in Oscar https://www.apneaboard.com/forums/Thread...apy-thread