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Possible UARS Sufferer?
#21
RE: Possible UARS Sufferer?
I just wanted to mention that I think FLs can cause problems even when they don't cause RERAs. Breathing with flow limitations is hard work, which is tiring in itself, and my suspicion is that this can also prevent the normal progression of sleep stages with adequate restorative REM and deep sleep.

In my experience, I rarely saw RERAs even when I had a busy FL graph, but when I knocked the FLs way down with my beloved VAuto, I felt distinctly more rested.
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#22
RE: Possible UARS Sufferer?
Good point Dormeo.

Makes sense. An arousal, after all, is merely one sleep stage transition; to wake. But if your broader sleep architecture is screwed up, that's not good either.
Caveats: I'm just a patient, with no medical training.
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#23
RE: Possible UARS Sufferer?
OK, so I set the CPAP to 9 last night and it looks like I got better peaks in my flow rate. Also my flow limit decreased a from .10 to 0.7. However, my CA's went up. See attachments. One is from CPAP = 6 and the other is CPAP =8.


Attached Files Thumbnail(s)
       
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#24
RE: Possible UARS Sufferer?
The screenshots indicate 6 and 8.

I would try Geer1's suggestion of 7, EPR 3, on auto with a max of 10 or 12. This would be to see what the great EPR does to your FL and CAs.

On the CAs, do you know if you were awake around any of those?
Caveats: I'm just a patient, with no medical training.
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#25
RE: Possible UARS Sufferer?
(02-19-2020, 07:02 AM)slowriter Wrote: The screenshots indicate 6 and 8.

I would try Geer1's suggestion of 7, EPR 3, on auto with a max of 10 or 12. This would be to see what the great EPR does to your FL and CAs.

On the CAs, do you know if you were awake around any of those?

I'll give that go tonight. 

I was not up during those periods. I only woke up once at 2am.
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#26
RE: Possible UARS Sufferer?
(02-19-2020, 07:02 AM)slowriter Wrote: The screenshots indicate 6 and 8.

I would try Geer1's suggestion of 7, EPR 3, on auto with a max of 10 or 12. This would be to see what the great EPR does to your FL and CAs.

On the CAs, do you know if you were awake around any of those?

OK, heres my data with those settings last night. Flow rate has better peaks and flow limitations are down a tad. I get my aircruve in today.  Cool

Imgur Snapshots


[Image: NGjqTzO]
[Image: aD4SPI5]
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#27
RE: Possible UARS Sufferer?
Those settings on your autoset will translate to the following on the VAuto:
  • min EPAP = 4
  • PS = 3
So in terms of the math, PS adds pressure on top of EPAP, and EPR subtracts it from IPAP.

Standard titration protocol for bilevel is to start at PS 4. You can try that if you like for a few days, and see how you do (for example, with CAs)?
Caveats: I'm just a patient, with no medical training.
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#28
RE: Possible UARS Sufferer?
Please always post the whole night of data. For example we can't see why your pressure maxed out of 10 early in the night although in this case it is likely safe to assume due to flow limitations.

Can you post a zoomed in shot two minute duration showing the period of high flow limitations at 00:55?

I agree with trying min EPAP 4 and PS 4 on the aircurve.
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#29
RE: Possible UARS Sufferer?
(02-20-2020, 10:48 AM)Geer1 Wrote: Please always post the whole night of data. For example we can't see why your pressure maxed out of 10 early in the night although in this case it is likely safe to assume due to flow limitations.

Can you post a zoomed in shot two minute duration showing the period of high flow limitations at 00:55?

I agree with trying min EPAP 4 and PS 4 on the aircurve.

Hi Geer1,


Here are the requested screen shots: https://imgur.com/a/74jGseq

-Chris
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#30
RE: Possible UARS Sufferer?
That is an example where it seems the increasing pressure did help. PS 4 on the vauto will help a fair bit and we will see what the machine does for pressure.

We don't want min epap too high but after the first few nights on vauto we will check if it should be increased a bit. It does look like your flow limitations come and go(looks to me like they might be worse in rem which is common) so vauto mode with fluctuating pressures is probably the way to go in your case so that you can use lower pressures most of the time and get higher pressure when needed.
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