Hello Guest, Welcome to Apnea Board !
As a guest, you are limited to certain areas of the board and there are some features you can't use.
To post a message, you must create a free account using a valid email address.

or Create an Account


New Posts   Today's Posts

Unclassified apneas
#1
Unclassified apneas
Here's a SS from 7/6. I've chosen a few from the many UA's. Can anyone determine their significance? My Dr is inclined to discount them as fairly meaningless. But I am curious, and if anyone can offer any suggestions, I'd be grateful. Leaks are negligible.
[Image: NNc1BzR.png]
Post Reply Post Reply
#2
RE: Unclassified apneas
(07-07-2015, 08:42 AM)nativedancer Wrote: My Dr is inclined to discount them as fairly meaningless. But I am curious, and if anyone can offer any suggestions, I'd be grateful. Leaks are negligible.
leaks are negligible but maximum leak 170 L/m

Unknown Apnea http://www.resmed.com/content/dam/resmed...er_eng.pdf
An unknown apnea is an apnea during which a leak higher than 30 L/min occurs, precluding accurate determination of whether the apnea is obstructive or central.
Post Reply Post Reply
#3
RE: Unclassified apneas
I know nothing about UAs but the math tells me that nativedancer had 42 of them during the night but less than one minute was spent in the large leak region which I assume includes 30L/min. I also assume each UA had to be at least 10 sec to be registered. That's 7 minutes. Something doesn't add up.
if you can't decide then you don't have enough data.
Post Reply Post Reply
#4
RE: Unclassified apneas
The documentation on SleepyHead seems to explain this, IIRC. I think an apnea is unclassified if the xPAP can't determine whether it is a central or obstructive (it is within the theoretical that an apnea can be both partially obstructive and that your CNS doesn't cause a breath when expected, both at the same time), and possibly apneas that are shorter than the common 10-second flag requirement are considered "unclassified" as well. Shorter apneas are probably not important because they are short enough to not cause 02 desat, which makes them not a medical issue. But if I was still having a lot of those, especially long ones, I would want to get to the bottom of that.

Leaks may also contribute. If there is a leak, it is difficult for the xPAP to gauge back pressure accurately, or to check the result of an FOT pulse accurately, or to even know whether the prescribed pressure is actually making it into the system.
Post Reply Post Reply
#5
RE: Unclassified apneas
Thanks, Tyrone. O2 is 98, so no problem there. And I may be wrong, but aren't these very brief apneas? If so, I won't be concerned. Still, the UA's do make for a confusing AHI.









Post Reply Post Reply
#6
RE: Unclassified apneas
I was honestly surprised that they are included in the AHI. I have the same APAP and the same SH software, and they are not included in mine. The classic makeup of AHI is that it is a combination of the obstructive index, the central index, and the hypop index, a summary index of just those three.
Post Reply Post Reply
#7
RE: Unclassified apneas
Native Dancer has a S9 VPAP..it may not differentiate between apneas, my S9 Adapt lumps all apneas together as Unclassified Apneas...

Tyrone has an S9 Auto set, which does...

But we need one of the elders to verify this...:-)

Storywizard
Post Reply Post Reply
#8
RE: Unclassified apneas
Yeah, I didn't know there was such a thing as unclassified before I got sleepyhead. But I never was much good with statistics.
Post Reply Post Reply
#9
RE: Unclassified apneas
(07-07-2015, 07:16 PM)nativedancer Wrote: My S9 seems to separate Centrals, Obstructives and Unclassifieds. Beats me, though, I never was much good with statistics.

And you are not getting large leaks??

Hmmm, so the machine is saying " I don't know what these are"...

Back to the doc I would say...

S

Post Reply Post Reply
#10
RE: Unclassified apneas
(07-07-2015, 06:59 PM)storywizard Wrote: Native Dancer has a S9 VPAP..it may not differentiate between apneas, my S9 Adapt lumps all apneas together as Unclassified Apneas...

Tyrone has an S9 Auto set, which does...

But we need one of the elders to verify this...:-)

Storywizard

Thanks.

I misread ND's info. My bad.

The link seems to explain it best.
Post Reply Post Reply


Possibly Related Threads...
Thread Author Replies Views Last Post
  please help me make sense of my central apneas p4ncaketim 23 536 03-24-2024, 06:21 PM
Last Post: Sleeprider
  Fixing (CPAP-induced?) central apneas Franko39 17 852 03-21-2024, 11:26 PM
Last Post: Franko39
  [Treatment] Having several Unclassified Apneas.... meatheadmd 7 303 03-19-2024, 07:54 AM
Last Post: Sleeprider
  Cpap causing Central Apneas shedu1337 1 262 02-24-2024, 05:46 PM
Last Post: Sleeprider
  Central apneas and tips to improve CPAP therapy jcp519 20 1,282 02-21-2024, 12:37 PM
Last Post: jcp519
  [split] Central and Complex apneas with CPAP JohnCondor 3 277 02-16-2024, 01:24 PM
Last Post: Sleeprider
  High Number of Central Apneas HungryPanda 5 453 02-13-2024, 09:19 AM
Last Post: SarcasticDave94


New Posts   Today's Posts


About Apnea Board

Apnea Board is an educational web site designed to empower Sleep Apnea patients.