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SleepyHead v0.9.8-1 question
#1
SleepyHead v0.9.8-1 question
The bottom graph in the daily view has events "by pressure". It has multiply triangles for all events. Is there any way to interpret it and make use of the data?
Also my RDI graph will not work, any ideas?

Thanks, Brad
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#2
RE: SleepyHead v0.9.8-1 question
The table is useful if you want to correlate things with a particular pressure. The By Pressure table bucketizes the various events and information into pressure buckets.

The table shows you for each pressure value how much time you spent in that pressure and how many events of each type occurred for that pressure.

I'm not sure what the units of the particular values are (e.g., RE is 0.33, but 0.33 of what?). I'm also not sure exactly what the graphs represent. Maybe someone else can answer that.

Can't help with the RDI, my machine doesn't have that.

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#3
RE: SleepyHead v0.9.8-1 question
(05-03-2015, 12:37 AM)SleepingInRlyeh Wrote: The table shows you for each pressure value how much time you spent in that pressure and how many events of each type occurred for that pressure.
I'm not sure what the units of the particular values are (e.g., RE is 0.33, but 0.33 of what?).

The values are the index of events per hour in that "pressure bucket". RE=.33 equates to 2 RERA events during 369.2 minutes of time at pressure 7. The .49 Flow limits = 3 in the 369.2 minutes.
The 2.29 equates to 3 hypopneas at pressure 8.
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#4
RE: SleepyHead v0.9.8-1 question
(05-02-2015, 03:14 PM)car54 Wrote: The bottom graph in the daily view has events "by pressure". It has multiply triangles for all events. Is there any way to interpret it and make use of the data?
Also my RDI graph will not work, any ideas?

Thanks, Brad

I believe triangle display is a work in progress, to say the least. It is beta software, and I think Mark didn't get that to something that's particularly useful. It's intended to be something like a histogram, and the colors match the colors of the graphs above. I think. I never really deciphered it that well.
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#5
RE: SleepyHead v0.9.8-1 question
Thanks for the info. I could not make sense of the triangles.
Brad
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#6
RE: SleepyHead v0.9.8-1 question
Brad, your AHI and RERA events are so low, you really don't have to use that graph. Your AHI is only 0.67 for the night and RERA is 0.27. That is exceptional therapy and there is nothing to be gained from seeing what pressure range the only event occurred in. I agree, the frequency by pressure chart is not very well done yet, although with some people who experience a lot of events, it does provide some interesting information, especially when different event types occur at different pressures.

In your case, we can see flow limitations (gray) occur at 7.0, which is probably the reason for the minor pressure increases you saw at 23:00 and 02:50. The few RERA you had peaked at 8.0, while you had some Hypopnea (blue) when your pressure peaked at 8.5. You can pretty much ignore pressure pulses (brown) and VS2 (red). None of this is significant enough to make recommendations for pressure changes in your case, but that is how it intends to work.
Sleeprider
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