Question on data

mets123 · Post by **mets123** » Sun Dec 09, 2018 11:04 am

If someone can look at my data from last night. From 6:00 to 6:30 I have a cluster of obstructions which seem to also be related to an increase in my leaks. I was not aware at all of the leaks btw. I seem to get this often in the morning time just a little while before I wake up. This obviously is the reason for my increase in the ahi number. I wear a cervical collar to try and prevent the clusters but is there anything else to do? Is the increase in the events just before waking up normal and should anything be done?
Thanks for the time.

mets123 · Post by **mets123** » Sun Dec 09, 2018 11:09 am

Also wanted to mention the time frame I mentioned also shows at that time an increase in flow limitations.

Pugsy · Post by **Pugsy** » Sun Dec 09, 2018 11:20 am

Zoom in on that late cluster and make sure you were asleep when it happened before you go worrying about what to do about it.
Do you know how to that?
If not...watch the videos here.
http://freecpapadvice.com/sleepyhead-free-software

If you weren't asleep...they don't count and you have to mentally remove them from the evaluation process.
Arousal, post arousal breathing, awake breathing...SWJ..sleep/wake/junk....don't count because we can't fix them except by not waking up.

mets123 · Post by **mets123** » Sun Dec 09, 2018 11:27 am

Do these seem to give some feedback? It does look like some of the obstructions are when I had leaks.
Thanks Pugsy.

Pugsy · Post by **Pugsy** » Sun Dec 09, 2018 11:39 am

Those look like SWJ.
Very irregular breathing in general.
The leaks may have disturbed your sleep and you may or may not remember it. Arousal or post arousal breathing flags that don't count.
Any number of things could have happened at that time...might just be sort of waking up in general...might have been the leaks disturbing sleep...pressure increasing might have caused the leaks which then in turn disturbed sleep.
I would shrug my shoulders and move on if it were my report and I didn't know for sure what it might have been.
To fix a problem we have to know the cause of a problem first and sometimes we just don't know the cause.

Asleep breathing...nice and rhythmic and boring...both before and after the flagged events.

mets123 · Post by **mets123** » Sun Dec 09, 2018 11:48 am

Thanks again Pugsy for the clear explanation. Is there anything to try and prevent clusters of events happening?

Pugsy · Post by **Pugsy** » Sun Dec 09, 2018 12:04 pm

Clusters that are awake/arousal clusters and SWJ...only way to prevent is not have the awakening/arousal stuff happen to screw up the breathing that fools the machine.
Remember the machine only measures air flow. It has no way of knowing if you are asleep or not. It just calls them like it sees them and sometimes it sees them wrong.

Now figuring out what caused the arousal/awake time and then fixing it...2 problems...the cause and the fix because either one isn't always so easy to do.

What you didn't show was the breathing pattern right before that first cluster at roughly 6 AM.....there's a central and an OA close together...did these start the awake breathing and cause the arousal.

My bet is the leak disturbed your sleep. And we all know how easy it is (not) to fix leaks.

I had an AHI of nearly 4 not long ago...I went and looked at every single one of the flagged events and there was a nice mixture of all the categories and a little bit of clustering a couple of times. Not a single event flagged was real. Everyone was SWJ.
Then I thought back on my sleep quality...bad night in terms of back pain...lots of tossing and turning from the pain.
So the pain was the cause of my higher than usual AHI and not much more I can do about it than I am doing already.
I had a crappy night's sleep but not because of sleep apnea...it was from the pain.

mets123 · Post by **mets123** » Sun Dec 09, 2018 12:11 pm

Pugsy does this screenshot help?

Pugsy · Post by **Pugsy** » Sun Dec 09, 2018 12:21 pm

The flow rate graph scale is a bit small but looks like arousal breaths before the first flagged OA.
Starts at about 06:04:20. Something caused an arousal and what came after that arousal was SWJ.

mets123 · Post by **mets123** » Sun Dec 09, 2018 12:29 pm

Pugsy I think this shot shows exactly what you are saying, right? Thanks again for your knowledgeable answers!

Pugsy · Post by **Pugsy** » Sun Dec 09, 2018 12:36 pm

Yep...you had the arousal long before the OA flow reduction happened.
Now if you had been sound asleep and then bam...the OA happened...might blame the arousal on the OA but I don't see it here.

mets123 · Post by **mets123** » Sun Dec 09, 2018 12:38 pm

Thanks for your answers, have a great day.

Dog Slobber · Post by **Dog Slobber** » Sun Dec 09, 2018 1:01 pm

mets123 wrote: ↑
Sun Dec 09, 2018 11:48 am
Thanks again Pugsy for the clear explanation. Is there anything to try and prevent clusters of events happening?

Whenever I wake up through out the night, or in the morning just laying there wait to get up, almost always I see a whole bunch of SWJ.

Now what I do is briefly turn off the machine, then immediately turn it back on.

This allows me to look at the data and possibly explain why I woke up.
Set machine back to ramp defaults. (I have ramp set to auto).
I don't get any SWJ, therefore my SleepyHead reported AHI better represents my true AHI.

I know when I looked at a sleep session that was riddled with SWJ, I could discount the higher AHI. And as much as I know my reported AHI is artificially elevated, it irritates me knowing it is misrepresented.

I also want my next visit to my sleep Dr. to be a whole bunch of nights with les than 0.5 AHI, instead of 1.x, 2.x, 3.x and me telling her it should be a lot lower, but there is a bunch of false positives in there.

mets123 · Post by **mets123** » Sun Dec 09, 2018 1:42 pm

Sounds interesting dog slobber. I guess that is one sure way the next day you can analyse the data,thanks.

ChicagoGranny · Post by **ChicagoGranny** » Mon Dec 10, 2018 8:36 am

And as much as I know my reported AHI is artificially elevated, it irritates me knowing it is misrepresented.

It's not misrepresented. It's just the known limitations of CPAP - no EEG.

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