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Flow limitation
#81
RE: Flow limitation
Quote:First we had to shift his thinking from OSA TO UARS where flow limitations rather than Apnea\Hypopnea is the main culprit

Quote:WiKi:
A patient is considered to have UARS when they have an Apnea-Hypopnea Index (AHI) less than 5, but an RDI greater than or equal to 5.

This is the first time someone refers to RDI.  I will have to educate myself about that indicator.

I have AHI < 5, but not RDI > 5

The RDI my OSCAR shows:
   

As you can see, my RDI is larger than my AHI

As for Flow Limit charts, my last 5 days look like the attached screenshot.

I can write a lot about my efforts to improve my results.

I have multiple recommendations in this forum to change my APAP for a BiPAP.

I think I have a good case to present to my doctor (except the RDI > 5).

Any comments?


Attached Files Thumbnail(s)
   

DanEm

"If life hands you lemons, make lemonade! Words to live by, especially when you keep in mind that the only way to make them into lemonade is to squeeze the hell out of them."
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#82
RE: Flow limitation
RDI includes AHI + RERA events.

http://www.apneaboard.com/wiki/index.php...ndex_(RDI)
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#83
Waveform
I found this waveform and comparing it to the sample on WiKi I cannot see if it is bad or good.

At the same time, OSCAR saw no events nor flow limitation.
So is it MY normal breathing?
Not very close to the normal one shown on WiKi.


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DanEm

"If life hands you lemons, make lemonade! Words to live by, especially when you keep in mind that the only way to make them into lemonade is to squeeze the hell out of them."
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#84
RE: Flow limitation
Rises unrestricted to a peak flow then drops rapidly to exhale. Normal.
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#85
RE: Flow limitation
DanEm,

Wishing you luck.

For the wiki quote, Not sure, but I would assume the numbers are without being treated. Just thinking that because describing severity of sleep apnea the numbers are pretreatment
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#86
Chart error
I posted a chart in post #53 that is incorrect.
I have detected an error in the extraction of my data.
The revised chart is included here.

The other charts I posted are OK.

This one with the error does not change my situation regarding rational for changing my CPAP for a Bi-Level one.

What is not right is the linking of Higher Flow Limitations to Higher Events.

Sorry about my error.  Oh-jeez


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DanEm

"If life hands you lemons, make lemonade! Words to live by, especially when you keep in mind that the only way to make them into lemonade is to squeeze the hell out of them."
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#87
RE: Flow limitation
@DanEm

What I'm interpreting there is that flagged events are not directly related to the flow limit index, right?

There don't seem to be machine algorithms to flag flow limits?

But we know that higher flow limits = lower quality rest.
This article gives multiple references to the evidence supporting that: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4688581/

And we know your flow limits continue to be high.
Your OSCAR charts are that evidence.

Bilevel is a recommended treatment for high flow limits.
Quote: ".... Moreover, during the inspiratory cycle the greater level of pressure assist would combat the inspiratory flow limitation suffered by the upper airway. "
[url=https://rc.rcjournal.com/content/respcare/55/9/1216.full-text.pdf][/url]https://rc.rcjournal.com › respcare › 1216.full-text.pdf

So...  can you simply show your provider your flow limits?

(edited due to link issues)
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#88
RE: Flow limitation
for
[url=https://rc.rcjournal.com/content/respcare/55/9/1216.full-text.pdf][/url]https://rc.rcjournal.com › respcare › 1216.full-text.pdf

I got this to work. Not sure if that is what you wanted.

https://rc.rcjournal.com/content/respcar...l-text.pdf
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#89
RE: Flow limitation
(10-07-2022, 03:38 PM)KeepSmiling Wrote: I got this to work.  Not sure if that is what you wanted.

Yes it is and I already had it  Coffee
Thank you

DanEm

"If life hands you lemons, make lemonade! Words to live by, especially when you keep in mind that the only way to make them into lemonade is to squeeze the hell out of them."
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#90
RE: Flow limitation
(10-07-2022, 02:11 PM)Brazen Wrote: What I'm interpreting there is that flagged events are not directly related to the flow limit index, right?

There don't seem to be machine algorithms to flag flow limits?

But we know that higher flow limits = lower quality rest.
This article gives multiple references to the evidence supporting that: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4688581/

And we know your flow limits continue to be high.
Your OSCAR charts are that evidence.

Bilevel is a recommended treatment for high flow limits.
Quote: ".... Moreover, during the inspiratory cycle the greater level of pressure assist would combat the inspiratory flow limitation suffered by the upper airway. "
[url=https://rc.rcjournal.com/content/respcare/55/9/1216.full-text.pdf][/url]https://rc.rcjournal.com › respcare › 1216.full-text.pdf

So...  can you simply show your provider your flow limits?

(edited due to link issues)

That is my conclusion for events and flow limit.
I already had both references and using them.

And yes, I intend to show my doctor the flow limits.
It would be useless to provide them to my sleep clinic, they are not that versed in understanding what goes on.

Still waiting to get a consultation.  Dont-know

DanEm

"If life hands you lemons, make lemonade! Words to live by, especially when you keep in mind that the only way to make them into lemonade is to squeeze the hell out of them."
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