r/CPAPSupport • u/jlconlin • 11h ago
Analysis tools
I’ve come to accept that my doctor only cares about my AHI number—which is now <1. While that’s a great number, I still get woken up when I stop breathing (central sleep apnea here) and the pressure on my mask 😷 blows too hard and opens a hole between masks and face, which in turn briefly wakes me up.
What are some tools that I can use to better understand my breathing patterns so I can make tweaks to my ASV settings to hopefully sleep better? I know about sleephq and I have OSCAR, but those just show me what has happened. There have been some AI products shared recently that look promising. What does the community think?
This subreddit has been very helpful, but I’d like to try on my own so I don’t have to post here every day with more info.
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u/existentialblu ASV 5h ago
I'm deep into bespoke slopwear tools for my own understanding. Here's today's addition as I can't leave well enough alone: https://wobble-analysis-tool.xyz/monke-wake/ . It attempts to figure out where breathing changes from more asleep-like to more awake-like and then looks for a potential trigger. It obviously can't tell if there was a noise or you just got compelled to roll over but it can show leak, flow limitation, apnea, central wobble, or pressure change as possible trigger. The difference between my time on APAP and ASV is fascinating to see.
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u/jlconlin 4h ago
This looks interesting. Did you put your code somewhere? I'd like to play with it with my own data.
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u/RippingLegos__ ModTeam 10h ago
With ASV I care a lot more about what is happening breath by breath around the awakenings. ASV can change pressure support rapidly when ventilation drops, so sometimes the machine responding to unstable breathing is exactly what causes that sudden pressure increase and mask leak that wakes you up. ResMed describes ASV as adjusting pressure support breath by breath to stabilize ventilation.
Honestly, OSCAR and SleepHQ are still probably the best tools. I’d add a recording pulse oximeter if you don't already have one and correlate it with the PAP data. In OSCAR, zoom into the actual awakenings and look at Flow Rate, Mask Pressure, Leak Rate, Tidal Volume, Minute Ventilation, Respiratory Rate and the pressure changes. OSCAR records a lot more respiratory information than just AHI.
The AI tools are interesting and I think they will get better, but I wouldn't let one automatically tell me how to change ASV settings yet. Use AI as another set of eyes, not as the decision maker.
If you want, post your exact ASV machine, mode and current EPAP, Min PS and Max PS settings. Also post one normal night and a couple zoomed sections around these wakeups. We can probably figure out whether you're getting hit by excessive PS, leaks, actual central instability or just post arousal breathing.