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Well LankyLefty has a lot of videos about scoring, I just went through the ones suggested before as well as
Sleep Respiratory Scoring and OSCAR TIPS
Exciting Respiratory Video: Hints and Tips on CPAP Breathing Patterns
Central Sleep Apneas, REM Sleep Breathing and SleepyHead OSCAR Tutorial
Not sure if any of these these are one Miss Emerita was thinking of.

Since he uses PSG data he can tell whether a flow pattern is actually an arousal or not by what happens to the EEG at the same point. With just flow data to go on it's much harder to tell.

Anyway, following Miss Emerita's suggestion I'm trying standard response for a few days.

DayDreamBeliever wrote: ↑

Thu Dec 08, 2022 2:59 pm

Well LankyLefty has a lot of videos about scoring, I just went through the ones suggested before as well as
Sleep Respiratory Scoring and OSCAR TIPS
Exciting Respiratory Video: Hints and Tips on CPAP Breathing Patterns
Central Sleep Apneas, REM Sleep Breathing and SleepyHead OSCAR Tutorial
Not sure if any of these these are one Miss Emerita was thinking of.

Since he uses PSG data he can tell whether a flow pattern is actually an arousal or not by what happens to the EEG at the same point. With just flow data to go on it's much harder to tell.

[...]

He's not using / doing a PSG when he's analyzing OSCAR data.

Yes, his titles are a little misleading...

ozij wrote: ↑

Thu Dec 08, 2022 10:10 pm

He's not using / doing a PSG when he's analyzing OSCAR data.

in this instance, what does PSG stand for?

google has let me down.

zonker wrote: ↑

Fri Dec 09, 2022 4:36 pm

ozij wrote: ↑

Thu Dec 08, 2022 10:10 pm

He's not using / doing a PSG when he's analyzing OSCAR data.

in this instance, what does PSG stand for?

google has let me down.

https://www.google.com/search?client=av ... 1&ie=UTF-8

zonker wrote: ↑

Fri Dec 09, 2022 4:36 pm

in this instance, what does PSG stand for?

google has let me down.

Polysomnogram

Jlfinkels wrote: ↑

Fri Dec 09, 2022 6:41 pm

zonker wrote: ↑

Fri Dec 09, 2022 4:36 pm

in this instance, what does PSG stand for?

google has let me down.

Polysomnogram

gesundheit!

thanks, i seem to remember, now that you've reminded me, that from other posts on the forum.

zonker wrote: ↑

Fri Dec 09, 2022 8:03 pm

gesundheit!

And the "poly" is there to remind us that during that somno (sleep) study many sensors channels are recorded at the same time.

So let's translate PSG to "Plenty Sleep Graphs" (an approximation)
and remember that xPAP machines don't have that plenty:
They don't have EEG
They don't have effort belts on chest and stomach
The don't have sensors for eye movement
The they don't have sensors for leg movements
They don't have sensors for oxygenation.

The only thing PSG's and xPAPs have in common is a flow sensor.

ozij wrote: ↑

Fri Dec 09, 2022 11:02 pm

zonker wrote: ↑

Fri Dec 09, 2022 8:03 pm

gesundheit!

So let's translate PSG to "Plenty Sleep Graphs" (an approximation)

i like that!

DayDreamBeliever wrote: ↑

Thu Dec 08, 2022 2:59 pm

Anyway, following Miss Emerita's suggestion I'm trying standard response for a few days.

So after a couple of weeks with Response on Standard instead of Soft, I have a subjective feeling that I'm sleeping a bit more soundly, but my daytime sleepiness is still mostly the same, i.e. quite significant.

I don't see much difference in my charts. Everything seems basically fine, and the small number of CAs seem to follow arousals.

There still seems like a lot more variablity in the flow chart than most other people's I've seen on this forum. I don't know if this indicates objectively that my sleep is still disturbed?

Your flow chart doesn't look that unusual to me. I think you're right that the CAs generally follow arousal breathing; it's the arousals, not the CAs that are a potential culprit.

It's normal to wake up off and on during the night, and I think brief arousals are also fairly normal. But something is interfering with your ability to feel rested during the day. Here are three ideas for you to try. Ideally, you'll try them one at a time, giving each around a week, so you can gauge what's helping and what isn't.

First, do try allowing yourself more time to sleep. You may well be one of those people who needs a longer time in bed so as to have 8 hours of actually sleeping. It can be hard to change your habits, especially if that will change things for other people in your household. But give it a try. Just keep in mind how wonderful it would be to feel rested.

Second, try increasing your EPR to 3 and increasing your minimum to 7. You have significant flow limitations. These may or may not be interfering with restful sleep. Going up to EPR of 3 may reduce the FLs. (They may also cause some increase in CAs, but unless there are a crazy number of them, that might not be something to worry about.) You'd need the minimum of 7 to get the full benefit of EPR throughout the night, since the machine can't go lower than 4.

Third, try setting min = max = 7. This will eliminate pressure changes as a possible cause of unrestful sleep. You may see an uptick in OAs or Hs. If you see that for a few nights, try min = max = 7.6 or so. You'd be looking for the lowest pressure that will deal with your OAs and Hs.