Well, there are a few points noted in the sleep study.
Most glaring is the absence of REM. Knowing how you behave in REM is essential to planning treatment.
OSA tends to be far worse in REM vs NREM (can you imagine, worse than AHI 114?) Probably not AHI-wise, but desaturation-wise. I can't imagine you
never having any REM (this situation can occur with some medications as well as OSA)(well, usually not
none) and it might be interesting to offer another explanation for the areas of increased pressure in the 12/4 study. They are roughly 90 minutes, or a multiple of that, apart. Which would make them occurring approximately at periods of REM, so there could be a reason why increased pressure might actually be necessary if there is a significant REM-dependent component.
Alternatively, if the OSA was less severe or non-existent in REM, you could make a case for CSBD, which would explain the inconsistent pressure responses. If you really want to make a case for centrals, that tendency will pretty much always be there, and the relatively high ending pressure during CPAP titration could be the result of an ineffective titration punctuated by unresponsive or worsening AHI in the face of increasing pressure (BTW, do you have that study? There may be clues there).
The lack of severe desats in the face of a horrendous AHI is somewhat curious. Another BTW, the nadir of 81% occurs during what is most probably artifact (note reference line at 80%):
so your nadir looks more like mid-to-high 80's. And that's probably academic now with the 30 pound weight loss (until we're sure about REM).
All those PLMs are buried in the respiratory events. Generally, PLMs cannot be scored if they're contained within respiratory events, but we can check that further in the titration statistics once the respiratory events are resolved.
The overall sleep architecture is a wreck, with all the Wake/Stage 1/Stage 2 stage changes. We'll have to see if Sleep Percentages normalize and overall architecture improves with CPAP.
I see you've got a 251 second respiratory event in the report there.
That's pretty long.
SAG