ResMed users -- what do your flow limitations look like?

[palerider]

Where did you come up with that value of "0.4"? Any links?

something sludge said a while back.

[Wulfman...]

Where did you come up with that value of "0.4"? Any links?

something sludge said a while back.

He says LOTS of things. (most of which I take seriously......in whatever identity he's using at the moment)

But, unless he comes forth and gives us a link to something other then the "PBE" (Play-See-Bow Effect - "PSBE"), I'll keep an open mind to other values. Like I said, I had values from 0.0 to 1.2 in a week of APAP pressures.....10 - 15 cm.


Den

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[tan]

I often have AHI 0.0 and below 1.0 almost all the time.

One more thing to check: enable custom user events to flag durations >=3 s.

[princessbelle]

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[tan]

I felt great when I woke up from my nap, been a very long time I felt good just waking up. I did take a look at my stats and saw that I should have started around 11. When the flow limit is so wacky is that indicative of nasal restriction? I don't seem to have any issue with breathing through my nose, then again I didn't have any issues sleeping either until that was brought to my attention. I have insurance, a specialist visit is a co-pay wondering if I should just make the appointment. I am learning what all the graphs are, what they mean and what my issues are. Thanks for all the advice.

My impression is that sleep doctors, unless they are Krakow, don't generally pay any attention to flow limitations

[palerider]

My impression is that sleep doctors, unless they are Krakow, don't generally pay any attention to flow limitations

my impression, (mainly from reading here and there) is that krakow is in the business of selling ASV machines...
now, that may be wholly unfair.

[Wulfman...]

My impression is that sleep doctors, unless they are Krakow, don't generally pay any attention to flow limitations

my impression, (mainly from reading here and there) is that krakow is in the business of selling ASV machines...
now, that may be wholly unfair.

For "Dr. Krackpot"?.......i don't think so. I believe you nailed it.


Den

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[tan]

My impression is that sleep doctors, unless they are Krakow, don't generally pay any attention to flow limitations

my impression, (mainly from reading here and there) is that krakow is in the business of selling ASV machines...
now, that may be wholly unfair.

Oh, I'm not saying he is right and other doctors are wrong... What I am saying that flow limitations business is his trade

[Wulfman...]

My impression is that sleep doctors, unless they are Krakow, don't generally pay any attention to flow limitations

my impression, (mainly from reading here and there) is that krakow is in the business of selling ASV machines...
now, that may be wholly unfair.

Oh, I'm not saying he is right and other doctors are wrong... What I am saying that flow limitations business is his trade

He was also an advocate of these machines, too. And that was after they were already "dinosaurs".

https://www.cpap.com/productpage/purita ... level.html

If anybody hasn't already read his postings here on the forum, he was quite active for a relatively short period of time.


Den

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[Sludge]

Where did you come up with that value of "0.4"? Any links?

Well, I guess it all started with one of the early ResMed patents, which stated

If the flow limitation parameter is between 1 and a predetermined normal reference value, e.g., 0.65-0.8, then the breath is classified as "normal." If the flow limitation parameter is between 0 and a predetermined flow limited reference value, e.g., 0.4, then the breath is classified as "flow limited." If the flow limitation parameter is between the normal and flow limited reference values, then the breath is classified as "intermediate."

[Sludge]

Soon thereafter, the world turned upside down...

[Wulfman...]

Where did you come up with that value of "0.4"? Any links?

Well, I guess it all started with one of the early ResMed patents, which stated

If the flow limitation parameter is between 1 and a predetermined normal reference value, e.g., 0.65-0.8, then the breath is classified as "normal." If the flow limitation parameter is between 0 and a predetermined flow limited reference value, e.g., 0.4, then the breath is classified as "flow limited." If the flow limitation parameter is between the normal and flow limited reference values, then the breath is classified as "intermediate."

Is it just me or do those "parameters" sound bass-ackwards?
Or, is that what you meant by:

Soon thereafter, the world turned upside down...

But, thanks for that reference info.


Den

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[cathyf]

Is it just me or do those "parameters" sound bass-ackwards?

Yeah... I wonder if the value that the machine reports out is one minus that parameter?

[Sludge]

The switch happened about 5 years ago:

What's not to understand?

Rounded = Good

Flattened = Bad

S8 and Earlier Algorithm = "Flattening Index" & Good on Top



S9 Algorithm = "Flow Limitation" & Good on Bottom:

[Sludge]

It appeared to be more than a flip and label change as the analysis went from "FL" to "FFL". This was discovered by LoQ who presented

Fuzzy Flow Limitation