Pugsy wrote: ↑Sat Aug 14, 2021 10:27 am
Actually I think you are trying to see things with the data available that it really wasn't ever designed to show.
Assuming facts not in evidence. Trying to see stuff that isn't easily seen and was never expected to be seen with the data the machine gathers.
Now just because we can't see things doesn't mean they aren't there but this data was never meant to be put under the microscope at the level you are attempting.
There is some thought that more PS will help with FLs...but we don't know that FLs are your problem...you certainly aren't having a truckload of them. No one ever has "perfect" breathing during sleep. No one ever has "perfect sleep" either.
Just way too many variables out there.
Would more than 3 PS help....dunno and no way to know unless you try it. I suspect it won't but there are no absolutes when it comes to this stuff.
Even a real in lab sleep study doesn't always give us all the answers we want. Example....while it might show arousals related to the airway...and spontaneous arousals as well...it can't tell us what caused the spontaneous arousals. All it tells us is they happened. Or maybe the in lab study shows alpha wave intrusions...but it doesn't tell us what caused them.
In lab studies aren't necessarily the end all perfect answering all questions that people expect. They come with limitations too...
More pressure doesn't fix everything...wish it were that simple.
If your arousals are spontaneous...no tweaking of the machine or changing machines is going to fix the problem.
More pressure won't/can't fix spontaneous arousals.
Your flow rate breaths do sometimes look like they are flow limited but not horribly...but you do have evidence of a lot of arousal breathing flow rate breaths.
The UF2 flag...the breaths immediately preceding the flag look arousal to me...and of course the flow rate after it looks arousal. Did the UF2 flagged event cause the arousal breathing after...I can't say it did because I saw arousal breathing before the flagged reduction. Those 2 gulps of air prior to the UF2 flag....we don't do those gulps when asleep.
You weren't asleep just prior to the UF2 flag.
My personal opinion...you are wanting the machine to fix a problem that it can't fix...crappy sleep from something other than airway issues at this stage of things. Any OSA itself is well treated but there is always the possibility that you have 2 separate problems....OSA and crappy sleep from something else.
Maybe there is a UARS component involved here...I don't know...wouldn't be impossible but we can't tell for sure with the data available. Just can't know for sure no matter how much we might want to and stretch every little not quite so normal breath.
And of course it might just be that you need to give things a LOT more time to see if anything improves.
I don't blame you for searching though....I just think that you are looking at the data available hoping for a concrete answer where the data collected wasn't ever really designed for concrete answers.
I think you have "bad" sleep from something not related to OSA itself (any OSA stuff seems to be well treated). Now what it might be...I don't know and have no way to know.
Would PS of 4 be the magic trick? I don't know.
I do know that even with someone using a really high end machine where the breaths can be manipulated so much they all appear "normal" it doesn't guarantee restorative refreshed sleep. They can still have spontaneous arousals and crappy sleep no matter how "perfect" all their breaths are.
I do know that if you decide to rent a bilevel machine....don't go over 5 PS without carefully monitoring results.
PS over 5 can trigger a lot of central apneas in people....so just like more pressure doesn't fix everything...More PS doesn't either.