how to use CPAP data to compute RDI with machine that doesn't report RERAs?
I've been using the ResMed S9 VPAP machine for years now. I have a UARS diagnosis and I would like to know if I can compute my RDI given that my machine does not report RERA events. It does have a flow limitation graph. I do realize that without ECG data, there's a lot of guesswork involved.
I have a general idea of what UARS is and what a RERA is and I would think that there ought to be something out there that could take the air-flow data and give a rough estimate, but I don't know where to start. AFAIK, OSCAR only shows RERA events if the machine reports them, which the ResMed S9 VPAP does not.
RE: how to use CPAP data to compute RDI with machine that doesn't report RERAs?
OSCAR is first and foremost a reporter of what the device has recorded.
Analysis of that data would be ok but we need a programmer willing and capable to do so. For RERAS step one would be to identify an Arrousal. Step two would be to determine what, if anything caused it
Arousals, on a PSG, are identified with an analysis of the brain activity. Something no CPAP has access to. You would need to identify a disturbance in the Flow Rate. Then look for a cause preceding it. For RERAS the cause you are looking for is a series of flow limitations. The question becomes how long of a series is needed.
All that said you do realize that RERAS tend to be significantly underreported even on the machines that do report them.
Obviously not a trivial task.
Any programmers willing out there? OSCAR is always looking.
09-29-2023, 08:36 AM
(This post was last modified: 09-29-2023, 08:54 AM by TryingToGetItRight.)
RE: how to use CPAP data to compute RDI with machine that doesn't report RERAs?
I am a programmer myself, actually.
I would say that if I knew exactly what a RERA looks like, I could describe that in code, but there are lots of different things a RERA can look like, and I would have guessed that what I described has already been done.
RE: how to use CPAP data to compute RDI with machine that doesn't report RERAs?
https://www.apneaboard.com/wiki/index.ph..._Breathing
One example anyway, obviously both the flow limitations and arousal could look a bit different.
If you would look at the OSCAR code and would like to take a stab at it let me know. As I said OSCAR is always looking for programmers who want to make a difference.
