In the past I used this: https://www.amazon.com/dp/B0C2TR5JTS?ps ... ct_details which I think was decent, but it's hard to know how accurate it is.
Per BigWing's post, I would trust PAP on a very low pressure more.

I tried a quick test with the TSD I have and FFM. It doesn't seem super great -- either you have a proper seal with your mouth+TSD like you're supposed to, in which case your cheeks can still puff, or you don't have a proper seal in which case air can escape through your mouth. The latter is fine if...

Well, a lot of new things since last time. I went through complete ABG/PFT/Chest XRay just to confirm nothing was wrong from a pulmonary point of view, everything checks out fine. Good news, I guess, though I almost wanted to find something wrong.. I got a cone CT scan of my airway, and as expected,...

"Weak breathing" is a hypopnea, not a central apnea. The episodes are too short for the machine to count. Thanks! Does the length limitation also apply to hypopneas? I'm wondering why these aren't marked as hypopneas when I see other events that look more minor being marked as such. My "real" quest...

Friendly bump on the last post :) Your CO2 is theoretically perfect so IMO your p CO2 is normal and they have NFI how their equipment works. So... interesting development here. I had my ASV sleep study (which was generally uneventful / didn't feel any different than usual after), and I mentioned the...

Thanks, good to know re: Belsomra and ASV. I've been doing some analysis of my PAP data, in conjunction with the video recordings I use. Basically, what I'm looking for is an explanation for what's causing the sudden awakenings that I often see in the recordings. There's one pattern I see pretty con...

Your CO2 is theoretically perfect so IMO your p CO2 is normal and they have NFI how their equipment works. Yes, sadly I think this is the most likely... Belsomra was mentioned by my primary care once or twice. I'm not positive, but we may have done a short trial of it a few years ago -- I'll check ...

OK but get electrolytes too as if valid, that result could suggest metabolic alkalosis (the compensation for is reduced breathing). Sorry, for electrolytes, do you mean the electrolyte testing you get in a metabolic panel? I've had a few comprehensive metabolic panels over the years, results are ge...

Thank you Rubicon, I really appreciate your thoughts! Your diagnostic PSG showed O2 desaturation index 8.9 and AHI 14.9 so let's do xPAP. Your therapeutic PSG showed O2 desaturation index 8.9 and AHI 0.0 so like WTF miracle is this? For that matter, therapeutic PSG showed zero arousals and that's im...

...and here's my very first sleep study from 2016 (so naturally, no PAP/titration). Apologies for the quality, hopefully it's not too illegible.

Thank you all for the responses. I was hoping to spare you some of my long history here, but looks like we're getting to that point :lol:. Cue some nostalgic music and bear with me as we go on a whirlwind tour of my life... Almost my entire life (at least going back to my pre-teens, my memory before...

Thank you so much for the detailed analysis and explanations! I'm learning a lot. Regarding the flow limitations, to my untrained eye my breaths look a little bit like the "Inspiratory flow limitation" example. Is that what you meant? Based on what you said though, it sounds like the flow limitation...

Yeah...those centrals are stubborn. Plus given your history of frequent and numerous arousals we now have to add in learning how to figure out if the centrals are real asleep centrals or simply post arousal centrals. If you aren't asleep when flagged then they aren't real asleep centrals. When I se...

You could just be having a truckload of spontaneous arousals as well. Not all arousals are airway related. That's a really tough problem because you have to try to figure out what is causing the spontaneous arousals before you can hope to reduce them. Spontaneous arousals mean no known cause for th...

No further reduction in centrals to speak of with the reduction in pressure. Bummer...I had been hoping that maybe the higher pressures were triggering the centrals along with the PS but it doesn't appear that is the case. Let's try another reduction in PS....cut it in half again so a 1 cm drop...l...