unclassifed apnea

Can some explain unclassifed apnea?? TY

xxyzx wrote:

A MESS wrote:Can some explain unclassifed apnea?? TY

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do'H!

one taht was not classified

else it would be apneas, hypopnea, central,

or related areas FL, RERA , or some classification not UNclassified

This is not correct. An unclassified apnea is an apnea (stoppage of breathing for more than 10 seconds) that your machine was not able to determine if it was due to an obstructed airway or the lack of a signal from the brain to breathe. Hypopneas and flow limitations are not classified by xPAP machines as to their origin. RERA are respiratory related arousals.

You have a ResMed AirSense 10 AutoSet machine...is that correct?

If so, unclassified apnea is usually flagged during a time of a large leak. Something happened but the machine doesn't know what to call it because the leak is making it hard for the machine to know for sure what is going on.
I have see unclassified apnea flagging when the leaks were at maybe 32 L/min.
This is where it comes in handy to be using the software to see when the leaks happened...how bad they were and when the event was flagged.

Unclassified apnea would most likely be either a Central Apnea or an Obstructive Apnea but might also be a hyponea.
It won't be RERA or Flow limitation or anything like that. It will be one of the 3 categories of events but the machine didn't know what to call it.

Pugsy wrote:You have a ResMed AirSense 10 AutoSet machine...is that correct?

If so, unclassified apnea is usually flagged during a time of a large leak. Something happened but the machine doesn't know what to call it because the leak is making it hard for the machine to know for sure what is going on.
I have see unclassified apnea flagging when the leaks were at maybe 32 L/min.
This is where it comes in handy to be using the software to see when the leaks happened...how bad they were and when the event was flagged.

Unclassified apnea would most likely be either a Central Apnea or an Obstructive Apnea but might also be a hyponea.
It won't be RERA or Flow limitation or anything like that. It will be one of the 3 categories of events but the machine didn't know what to call it.

Pugsy, I thought that the cycling pressure used to differentiate central and obstructive apnea only starts after an actual apnea event is detected. If so there is no way for the machine to ever determine if a hypopnea is central or obstructive in nature. If this is the case, it has to be a full-on apnea for it to be reported as an unknown type.

TASmart wrote: Pugsy, I thought that the cycling pressure used to differentiate central and obstructive apnea only starts after an actual apnea event is detected. If so there is no way for the machine to ever determine if a hypopnea is central or obstructive in nature. If this is the case, it has to be a full-on apnea for it to be reported as an unknown type.

I am unsure exactly what is lost in terms of machines ability to sense anything in large leak and that is why I said "might also be hyponea".
It might have lost the ability to sense the amount of reduction which might help it determine if it was hyponea or full grown apnea.
It for sure lost the FOT used to determine open vs closed. It wouldn't be impossible for the amount of reduction sensing capabilities to be also affected.

I haven't had enough unclassified get flagged during large leak to do much evaluation of what the event might have been if it was named.
To be honest...never really thought a whole lot about it because in the end it really doesn't matter what it exactly might have been.
There was a large leak and the machine knew something was happening but didn't know what to call it...has always been good enough for me because I know the leak was the problem. We could maybe look at it under the microscope and figure it out but why go to all the trouble and for sure not with a newbie who hasn't got a grasp on the basics yet. Just more work than I want to do or have time to do right now and it's not a critical issue to get done anyway. AMess sure isn't ready for that level of work anyway.

Now with my ASV or AirCurve ST machines...both central and obstructive all go into the unclassified apnea basket but not because of leaks. It's just the way the machine does things. Hyponeas are separate though.

Pugsy - Agreed.

TY ladies. I have Sleepy head now --so I can figure it out.

A MESSrdqf171 wrote:TY ladies. I have Sleepy head now --so I can figure it out.

She has a new name.... and now TASmart and alphabet boy are ladies.

I know it's a popular "thing" now, but thank you, very much, I will stick with the gender that I got from the "factory".

But I don't want to be a lady

Sorry TAS. Would help if I read correctly. Pugs--Yes res med 10

Don't worry about it, I have been called much worse right here on this forum.