I've tracked my data with Sleepyhead, and being a heavy data analysis type person, I've found it incredibly interesting. I've got a very basic understanding of the more important stats, but a lot of the documentation and stuff I've read about analysis focuses on C/BiPAP type patterns; since ASV adjustments happen far more on the fly, it seems to thrown things for a loop.
For example, it seems the ASV only identifies hypoapneas and unidentified apneas. I'd like to ID if those are OSAs or CAs. I can see the pressure spiking during those events, but I'm not sure how to interpret the flow rate data.
Here's a hypopapnea, which makes sense, as the flow rate just before seems markedly erratic (I would've posted the images directly but I'm unable to post clickable links apparently).
And here's an unidentified apnea, which shows a very flat flow rate. Is there a way to determine if that's an OA or CA event?
Finally, is there a way to tell how "hard" the machine is working at preventing apneas? I'm assuming the pressure spikes throughout the night would be a sign that it's adjusting for things pretty often, or is this just normal? I know ASVs are designed to assist with a certain amount of pressure in terms of inspiration, but I'm not sure where to identify what's a normal assist, and when it's starting to detect irregularities and starts hiking up the pressure.
Here's a snippet of just under an hour where the pressure spikes a bunch up to 21 cmH20 and also levels off later.
Can anyone help me take a stab at interpreting the data?