How would you score these events?

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How would you score these events?

Postby MrBig » Mon Nov 10, 2014 8:03 am

How would you score these events?
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Re: How would you score these events?

Postby somnonaut » Mon Nov 10, 2014 5:59 pm

Please just post the channel assignements. Not sure which is which.
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Re: How would you score these events?

Postby MrBig » Tue Nov 11, 2014 2:04 am

Haha, my bad. Going up from SPO2: Abdomen, Thoracic, Thermistor, Cannula. Thanks.
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Re: How would you score these events?

Postby somnonaut » Tue Nov 11, 2014 5:36 am

I see two textbook Mixed events.
Why the question?
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Re: How would you score these events?

Postby MrBig » Thu Nov 13, 2014 2:16 am

We had some disagreement, and I'm just curious to see how others would score these. Thanks!
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Re: How would you score these events?

Postby stars » Thu Nov 13, 2014 9:50 am

Nice mixed why disagrement
This sample much clear vs ISR
Here really disagreement
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Re: How would you score these events?

Postby tiredjohnny1 » Fri Nov 14, 2014 12:20 am

If my techs scored them as either centrals or mixed, I would be ok with either.
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Re: How would you score these events?

Postby somnonaut » Fri Nov 14, 2014 1:21 am

TJ, scoring as Central is totally wrong.
This could be a case of low waveform display. If one viewer likes to have their channels low and cannot appreciate the small effort blips, then they will miss the mixed component. This has been a nudging issue with me ever since digitization. We need a standard as to how big the display is on screen (visual "eyeball" size) and the gain of the signal, not just at calibration time, but all through out the recording.
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Re: How would you score these events?

Postby tiredjohnny1 » Sat Nov 15, 2014 5:14 am

Like I wrote, I'm good with calling them mixed. The first sample looks like a mixed apnea, to my eyes. However, it is my opinion that a case could be made for artifact in the second sample, but I'm good with calling that one mixed also.
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Re: How would you score these events?

Postby somnonaut » Sat Nov 15, 2014 9:07 am

Paradoxical artifact?
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Re: How would you score these events?

Postby respbarb » Sat Nov 15, 2014 11:12 pm

This represents a beautiful example of a mixed apnea to me. Couldn't see it scored any other way, so I would have a problem with one of my techs saying it was a central.

That paradoxical effort is what I call "sharks in the water" as it looks like shark fins to me. Beautiful example of obstruction on resumption of effort.
Looks like it came right out of a textbook.
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Re: How would you score these events?

Postby tiredjohnny1 » Sun Nov 16, 2014 1:27 am

somnonaut wrote:Paradoxical artifact?

Its most likely a mixed apnea. But like you wrote, lack of consistent standards for digital display can cause issues. For example, is that paradoxical, or did the tech invert the trace, causing the artifact to appear 'paradoxical' ? (Easy to do with xltek). With the limited amount of information presented, and without a universal standard for digital display, I cannot state 100% that its mixed or central, but its most likely mixed.
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