I think you have to take a critical look at whatever hard data you have available, and specifically the parameters I mentioned above. Without doing that, there’s too much stuff left to chance.
1. The data could have identified the setting properly.
2. There could be an additional issue(s). If your overall sleep quality is consistently poor due to other causes, such as underlying insomnia, you can APAP all day long (or all night long) and you may not get anywhere.
3. I would assume that if you do get the APAP. you’ll do frequent data downloads to help determine treatment effectiveness. But don’t forget, it can only look at respiratory events, not if you’re actually sleeping, if you’re continuing to have desats, etc.
4. If you’re failing CPAP (i.e, good sleep efficiency in the diagnostic, poor in the titration), then you have to see why that occurred. Maybe poor flow through nasal passages. Maybe over-titration (that you ended up at 7 doesn’t necessarily mean you were there all night, or for how long).
Sleep reports can be of 2 types. A brief summary, or a detailed, 5-7 page report. The long report will give you the unedited data I described, including a CPAP titration table that shows responses at the different pressures. Getting that information will help decide if you need an APAP or if you should be looking at additional factors. It will also help in setting up the initial parameters.