Conflicting signals

USMCVet · Post by **USMCVet** » Sat Feb 17, 2018 1:50 pm

I would record again tonight and see what happens. That is weird.

ajack · Post by **ajack** » Sat Feb 17, 2018 2:00 pm

what was the respiration rate for the period on sleepyhead. you will need to zoom in.
IF it's right, it looks like you desaturated and the body over reacted, then settled down and desaturated again and it cycled.

HoseCrusher · Post by **HoseCrusher** » Sat Feb 17, 2018 3:54 pm

Did you happen to change the color of your fingernail polish...?

Sorry, bad joke.

There are a lot of things going on during the O2 measurement and sometimes erratic results are recorded. Tap your oximeter on the table a couple of times. In the event that something inside is coming loose, this may bring this to light.

Here is an interesting article on fluctuations, but I am not sure how it applies to your situation...

http://bjanaesthesia.org/article/S0007- ... 5637-6/pdf

palerider · Post by **palerider** » Sat Feb 17, 2018 5:41 pm

Pugsy wrote: ↑
Sat Feb 17, 2018 12:27 pm
Yeah....heart rate constant and sudden spikes and drops ....my first thought is loss of contact artifact.
Real desats don't happen that fast and don't go back up that fast.

I could very well be wrong, but I don't think those desats look like artifacts,... they should taper off and then zoom back up, all the artifacts I've seen are bigger immediate drops and then resumes, not that tapering off over a few minutes.

It almost looks like circulation was being cut off, and then resuming, then cutting off... not completely, because it was still getting a pulse, but enough for the blood in the finger to desat. You notice the resat periods are a slant, not a straight line.

Dunno, could be wrong.

Pugsy · Post by **Pugsy** » Sun Feb 18, 2018 12:31 am

palerider wrote: ↑
Sat Feb 17, 2018 5:41 pm

Pugsy wrote: ↑
Sat Feb 17, 2018 12:27 pm
Yeah....heart rate constant and sudden spikes and drops ....my first thought is loss of contact artifact.
Real desats don't happen that fast and don't go back up that fast.
I could very well be wrong, but I don't think those desats look like artifacts,... they should taper off and then zoom back up, all the artifacts I've seen are bigger immediate drops and then resumes, not that tapering off over a few minutes.

It almost looks like circulation was being cut off, and then resuming, then cutting off... not completely, because it was still getting a pulse, but enough for the blood in the finger to desat. You notice the resat periods are a slant, not a straight line.

Dunno, could be wrong.

I could be wrong also especially since the artifact % is so low.
But the pulse rate is stable...and I did notice what you are referring to but it just looks weird and not totally typical.
Before pushing the panic button I would want to repeat it and take a look at it in SleepyHead and compare it to respiration and flow rate.

Josiah · Post by **Josiah** » Sun Feb 18, 2018 9:52 am

I will repeat the study tonight and try to provide all the relevant graphs zoomed in.

USMCVet · Post by **USMCVet** » Mon Feb 19, 2018 11:54 am

We're you able to record last night?

Josiah · Post by **Josiah** » Mon Feb 19, 2018 12:03 pm

USMCVet wrote: ↑
Mon Feb 19, 2018 11:54 am
We're you able to record last night?

I did but I didn't see the same wild fluctuations in my O2. I had some fluctuations but they didn't seem conclusive enough to go to the trouble to report.
BTW what brand/model oximeter do you have?

USMCVet · Post by **USMCVet** » Mon Feb 19, 2018 12:15 pm

I have the CMS 50D+ . I think yours would be much more comfortable then mine.

ajack · Post by **ajack** » Mon Feb 19, 2018 5:59 pm

The desaturations were all above 90% on the recent one ?
I actually thing the original chart was real and not an error.

I have the 50f, they are accurate in the changes of spo2, the actual accuracy may be questioned, whether it''s reading 95 or with the +/- 2% it's 93 or 97.
I found when the spo2 is messing up, you either get no line, or single spikes on both to o2 going down to 50 and pulse going up 200 (or whatever number your's does, I think you would have seen this) it's for a single moment and doesn't last more than a single line.

Josiah · Post by **Josiah** » Mon Feb 19, 2018 8:56 pm

ajack wrote: ↑
Mon Feb 19, 2018 5:59 pm
The desaturations were all above 90% on the recent one ?
I actually thing the original chart was real and not an error.

I have the 50f, they are accurate in the changes of spo2, the actual accuracy may be questioned, whether it''s reading 95 or with the +/- 2% it's 93 or 97.
I found when the spo2 is messing up, you either get no line, or single spikes on both to o2 going down to 50 and pulse going up 200 (or whatever number your's does, I think you would have seen this) it's for a single moment and doesn't last more than a single line.

I certainly don't disagree with you, still what sort of physiological event could have caused that result and my heart rate never budged? How could my O2 have risen so high so fast? And my CPAP machine essentially ignored it!

I think on this last monitor I dipped down to 89% twice

Conflicting signals

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