SleepyHead Tutorial Under Underconstruction

General Discussion on any topic relating to CPAP and/or Sleep Apnea.
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Kairosgrammy
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Re: SleepyHead Tutorial Under Underconstruction

Post by Kairosgrammy » Fri Jan 27, 2012 12:06 pm

Just realized what I need to understand. I understand the info like ahi etc. Sometimes the charts confuse me, particularly how to read & interpret what is good tidal volume, flow rate inspiratory/expiratory rated, breathing rate. Hope that makes sense. The tidal volume is the one I really don't understand. Mine is at the bottom. Is that good or bad, does it mean I'm breathing too shallowly???

Pugsy wrote:Okay, I am working on the glossary for SleepyHead. That is pretty cut and dry. What I need from the members is some specific questions about what problems that they are having understand what they see or what to do.

We will put it all here for the time being and when we are finished I will edit and polish it for another thread as the official tutorial. The thread is the work thread.

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Re: SleepyHead Tutorial Under Underconstruction

Post by Pugsy » Fri Jan 27, 2012 12:37 pm

Kairosgrammy wrote:The tidal volume is the one I really don't understand. Mine is at the bottom. Is that good or bad, does it mean I'm breathing too shallowly???


In all honesty we aren't given any "normal" values for this other data that you are talking about.
I do know that there is a rather large "norm" range. I just looked at my tidal volume line and it is mainly on the bottom with a few upward spikes. I know my breathing is fairly normal and I have no lung issues, no asthma or anything like that. This is data that is really supposed to be evaluated by medical personal who have been trained in this area and already no the normal variations.

So...we don't know what is "normal" and what is something we may need to be concerned about. At this point until we can find "norms" to go by all we can say is maybe watch your own pattern and see if something shows up huge differently. Tidal volumes and stuff are more closely monitored by people using the ASV machines. So we are still working on how do these numbers indicate so and so.
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Kairosgrammy
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Re: SleepyHead Tutorial Under Underconstruction

Post by Kairosgrammy » Fri Jan 27, 2012 3:31 pm

I'm assuming its okay. I am just one of those folks that likes to know what she's looking at. I would think if AHI etc is all good, tidal volume should be good but then again, there are many medical mysteries. If yours are low too it would seem all is okay. I have just been meaning to ask for awhile and keep forgetting. Lucky I'm on cpap or I'd really forget everything.

Pugsy wrote:
Kairosgrammy wrote:The tidal volume is the one I really don't understand. Mine is at the bottom. Is that good or bad, does it mean I'm breathing too shallowly???


In all honesty we aren't given any "normal" values for this other data that you are talking about.
I do know that there is a rather large "norm" range. I just looked at my tidal volume line and it is mainly on the bottom with a few upward spikes. I know my breathing is fairly normal and I have no lung issues, no asthma or anything like that. This is data that is really supposed to be evaluated by medical personal who have been trained in this area and already no the normal variations.

So...we don't know what is "normal" and what is something we may need to be concerned about. At this point until we can find "norms" to go by all we can say is maybe watch your own pattern and see if something shows up huge differently. Tidal volumes and stuff are more closely monitored by people using the ASV machines. So we are still working on how do these numbers indicate so and so.

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Re: SleepyHead Tutorial Under Underconstruction

Post by Pugsy » Fri Jan 27, 2012 11:40 pm

Tidal volume...obviously quite a variance.. Some reports look "lower" than others due to scale. I have 3 very 3 different looking when just glancing at them but scale is important.
Tidal volume is by definition .The amount of air passing in and out of the lungs for each breath (mL).
Which of course doesn't tell us a whole lot. It is obvious from the reports that there is quite a variance.
And from the Wiki.... Tidal volume is the lung volume representing the normal volume of air displaced between normal inspiration and expiration when extra effort is not applied. Typical values are around 500ml or 7ml/kg bodyweight.http://en.wikipedia.org/wiki/Tidal_volume

When I zoom in on all three of these graphs I see that my overall average and line is somewhere between 350 to 420 or so. I am not a very large person. 4'11". This appears to be my norm. I have no history of lung problems. I am pushing 60 years of age. I am female. I suspect a tall man would have a higher norm than I do. At the moment I haven't researched this any more than these pages and my reports. When I have some time I will research it more.
http://en.wikipedia.org/wiki/Lung_volumes

Here are 3 very different looking graphs but all three show my average just a little under 400 and when I zoom in on the lines they are much, much more stable looking. I am below a general norm of 500 but then I am not "average" size woman either. From looking at my reports most of mine are real close to the numbers here. Some more and a few a tiny bit less. Since I see this is my norm then I will use this as my baseline normal. A tall man would likely have a very different norm. Someone living in the mountains may also have a different norm.
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Re: SleepyHead Tutorial Under Underconstruction

Post by Huxely » Sat Jan 28, 2012 7:53 am

I imported my data to update to see the last night's new data. I got duplicate plots of the same data on the same charts for each day,

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Last edited by Huxely on Mon Jan 30, 2012 9:38 am, edited 1 time in total.
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Kairosgrammy
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Re: SleepyHead Tutorial Under Underconstruction

Post by Kairosgrammy » Sat Jan 28, 2012 9:10 am

Thanks, that's very helpful. Looks like I'm running about 300 to 500 ml so that seems about right. I do tend to breathe rather shallowly and always have. Think its a habit I got into when I was younger and my asthma was acute. You'd think you'd breathe harder but in fact, that would hurt and so I'd compensate by breathing more shallowly and a lot faster. The year after daughter was born was really bad. I was in the ICU twice with asthma and threatened with the ICU multiple more times. When I'd go in, my resp. rate would be well into the 40s and sometimes the 50s which is really, really fast since normal is usally under 20 (wikipedia says 12 - 20). Respiration rate is normal at night so no problems there. Becoming smarter is hard work, I must say particularly when you are the ones answering the questions. Thanks for the help. It is appreciated.

Pugsy wrote:Tidal volume...obviously quite a variance.. Some reports look "lower" than others due to scale. I have 3 very 3 different looking when just glancing at them but scale is important.
Tidal volume is by definition .The amount of air passing in and out of the lungs for each breath (mL).
Which of course doesn't tell us a whole lot. It is obvious from the reports that there is quite a variance.
And from the Wiki.... Tidal volume is the lung volume representing the normal volume of air displaced between normal inspiration and expiration when extra effort is not applied. Typical values are around 500ml or 7ml/kg bodyweight.http://en.wikipedia.org/wiki/Tidal_volume

When I zoom in on all three of these graphs I see that my overall average and line is somewhere between 350 to 420 or so. I am not a very large person. 4'11". This appears to be my norm. I have no history of lung problems. I am pushing 60 years of age. I am female. I suspect a tall man would have a higher norm than I do. At the moment I haven't researched this any more than these pages and my reports. When I have some time I will research it more.
http://en.wikipedia.org/wiki/Lung_volumes

Here are 3 very different looking graphs but all three show my average just a little under 400 and when I zoom in on the lines they are much, much more stable looking. I am below a general norm of 500 but then I am not "average" size woman either. From looking at my reports most of mine are real close to the numbers here. Some more and a few a tiny bit less. Since I see this is my norm then I will use this as my baseline normal. A tall man would likely have a very different norm. Someone living in the mountains may also have a different norm.
Image
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Image

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Re: SleepyHead Tutorial Under Underconstruction

Post by DoriC » Sat Jun 30, 2012 2:11 pm

In Preferences under General what are the best settings for Middle calculations, Maximum calculations to use, Under Appearance, what settings for Overlay Flags and Graph Height. I don't know exactly how to set them.

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Re: SleepyHead Tutorial Under Underconstruction

Post by yarrow » Sat Jun 30, 2012 4:02 pm

DoriC wrote:In Preferences under General what are the best settings for Middle calculations, Maximum calculations to use

For us ResMed users, Mark recommends Median for the Middle and 99% for Maximum -- at least, on my Mac, when I hover over the drop-down list for Middle Calculations, a little yellow help box pops up to say "Median is recommended for ResMed users", and when I hover over the drop-down for Maximum Calcs it says "ResMed users should probably use 99th Percentile for visual consistency".

Median is a number that half the values are at or below, and half the values are at or above. So if your leaks for a short time were 10, 10, 15, 125, 10, 12, 15, then the median leak would be 12. The mean, or normal average, would be about 28. Probably 12 gives as good a picture of what was going on as any one number can -- most of the time your leaks were reasonable.

The 99th percentile is a number that 99 percent of the numbers were at or below, and 1 percent were at or above. Basically this tells SleepyHead to ignore truly extreme numbers when it reports the maximum, as long as they are also extremely rare: if you have 995 Tidal Volume numbers, all between 100 and 1500, and 5 values of 2000, SleepyHead will report 1500 as the maximum.

DoriC wrote:Under Appearance, what settings for Overlay Flags and Graph Height. I don't know exactly how to set them.

At least on my Mac, if I set Overlay Flags to "Standard Bars", then I get colored lines going through the black flow rate lines. If I set Overlay Flags to "Top & Bottom Markers", then the event markers on the Flow Rate graph are little colored tick marks on the bottom of the graph, sitting on the line over the time numbers. If I zoom in on the graph by selecting a particular time period or by pressing the up arrow, then the bottom tick marks turn into the standard bars once the graph covers an hour or less of time.

Graph height controls how tall each graph is when you click on the Reset button down in the lower left corner of the graph section, just to the right of the 100% button. The taller each graph, the fewer graphs you can see at once. For me, the default of 180 pixels lets me see four graphs at once. If I lower that to 150 pixels I can see five graphs at once, and 100 pixels gives me seven graphs. (SleepyHead will accept fewer than 100 pixels in the Graph Height box, but numbers under 100 just act like 100.)

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Re: SleepyHead Tutorial Under Underconstruction

Post by napstress » Sun Jul 01, 2012 6:45 am

Hi, Pugsy! Thanks for creating a glossary for this wildly helpful program!

I'm not sure this is responding to your question, or the general trend of this thread, but here are areas where I need clarity, if that helps the cause at all:

Session Times graph: I would like to be able to see more clearly the exact start and end times. Once I feel more rested, if the sleep-maintenance insomnia comes back, I want to be able to do sleep restriction "therapy," and need a precise view of what my habits currently are in order to map a plan. I've been using Encore, but would love to have it all in SH. The times are all crunched, with only 10:00am, 4:00pm, 10:00 pm, and 4:00am appearing—and then 10am and 4pm appearing again. 1) Not sure why 10am-4pm appears twice. 2) Would like to expand graph so I can see more precise times. Tried what DoriC said about changing size of graphs. I went up to 300, but nothing changed.

Also, in the Daily tab, SH uses nap time as beginning Sleep Time, which makes it hard to know how much sleep I got at night alone. Sleep consolidation is a huge issue for me.

Pressure graph: I am confused about the two Max, one Med, and one Min and the four colors representing them. Are those the settings or the pressures the machine used?

Leaks and Total Leaks graphs: 1) not sure what the difference is. 2) Leaks graph stopped showing data as of Feb 27, 2012. 3) Each graph has 3 colors (Max, Med, Min) and I'm not sure which one to look at.

Hope this helps and is relevant.
Epworth Sleepiness Scale: 14
Diagnostic study: overall AHI: 0.2 events/hour; overall RDI: 45 events/hour
Titration study: AHI: 6.1; RDI: 27; CPAP pressures: 5-8cm

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Re: SleepyHead Tutorial Under Underconstruction

Post by Pugsy » Sun Jul 01, 2012 7:16 am

napstress wrote:Also, in the Daily tab, SH uses nap time as beginning Sleep Time, which makes it hard to know how much sleep I got at night alone. Sleep consolidation is a huge issue for me.


I have no input on what SleepyHead mechanically offers...that is Mark's domain.
This one above though..short sessions creating tiny graphs...you can set SH to ignore short sessions and take those nap times out of the picture.
Preferences...and import tab...second line you can adjust the time that you wish SH to ignore.

Your other graph questions...could you give us a screen shot so we can see what you are seeing and wondering about.
Also what SH version are you using? Are you using a Mac?

It sounds like you are talking about the OverView graphs...with the medium, max, min.....For some reason my overview graphs are all broken up..looks like times when no use of the machine when I know there is...that is just a SH bug.
If this is what you are wondering about..Mark is aware of it but at the time I mentioned it I was the only one with the problem. So show us what you are seeing so we can know for sure what you are wondering about.

Again..I have no input in SH development..I just try to explain how to use what is offered in it.
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Re: SleepyHead Tutorial Under Underconstruction

Post by Arizona-Willie » Sun Jul 01, 2012 11:42 am

There were so many posts I just jumped to the end :(

So this may have been brought up.

When you import O2 data and you have to set the date because the software inputs the data with todays date so you have to set it manually to yesterday's date.
The only way I have successfully done that is to highlight the date and use the down arrow to change the date. Highlighting the date and inputting the date from the keyboard doesn't seem to work.

Then I make sure to click behind the date to get it set, otherwise it doesn't seem to take.
Also, I don't understand what the reset button to the right of the date is supposed to do.
I clicked it once and it seemed to mess everything up. Don't remember what happened now, that was sometime ago and I never messed with it again.

As a suggestion for an improvement, my night time O2 readings are pretty good with the machine blowing air into my lungs. I get a baseline of 91 or 92 most nights.
But, during the daytime, my O2 often goes down into the mid 80's but if I record the data with my Contec O2 meter I can't import it into sleepyhead because sleepyhead says the time stamps don't match --- naturally.

It would be nice if the programmer could incorporate the ability to input daytime O2 readings, somehow.
Sleepyhead gives a better breakdown and analysis than the contec software.

Thanks

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Re: SleepyHead Tutorial Under Underconstruction

Post by yarrow » Sun Jul 01, 2012 1:21 pm

napstress wrote:Session Times graph: I would like to be able to see more clearly the exact start and end times. Once I feel more rested, if the sleep-maintenance insomnia comes back, I want to be able to do sleep restriction "therapy," and need a precise view of what my habits currently are in order to map a plan.

Over in the left-hand column, with Details selected, at the very bottom, there's a section called Session Information which gives starting and ending times to the minute. You'll probably need to scroll down to see it. Here's an example:
Image
(There are three sessions because I often turn the machine off and then on again if I wake up briefly, because I'm trying to see the differences around the sleep/wake times.)

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Re: SleepyHead Tutorial Under Underconstruction

Post by Sir NoddinOff » Sun Jul 01, 2012 5:47 pm

I'll toss out one issue I've got with Sleepyhead. For my first month I took my SD card out and xfer'd the data to my computer with SH's 'import' button. After putting my card back in my PR System One 550, I would then erase my data so that there would be no averaging, mostly since I wanted to do a day-to-day tracking and wasn't interested in the 7 or 30 day averages. Anyway, for the first 30 days it said my 'therapy hours' were 6 to 6.5. Ok, that's cool, I knew I was sleeping 9 hrs a night, but I figured only six of those were real sleep. I could see that.

For the 2nd month of usage, I've NOT BEEN ERASING MY DATA WITH THE PR SYSTEM ONE MACHINE, but just letting the averages accrue. Right from the first week my average 'therapy hours' consistently rose from 8.0 to 9.0hrs. I always thought the PR machines considered 'therapy hours' to be real sleep... why the big difference from 6 to 9hrs? Just doesn't make sense to me. Sorry if this is complicated to understand... I don't understand it myself. Aren't therapy hours written in stone on the PR machines? Maybe it just one of Sleepyhead's "undocumented features"?

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Re: SleepyHead Tutorial Under Underconstruction

Post by Pugsy » Sun Jul 01, 2012 5:55 pm

Sir NoddinOff wrote:For the 2nd month of usage, I've NOT BEEN ERASING MY DATA WITH THE PR SYSTEM ONE MACHINE, but just letting the averages accrue. Right from the first week my average 'therapy hours' consistently rose from 8.0 to 9.0hrs. I always thought the PR machines considered 'therapy hours' to be real sleep... why the big difference from 6 to 9hrs? Just doesn't make sense to me. Sorry if this is complicated to understand... I don't understand it myself. Aren't therapy hours written in stone on the PR machines? Maybe it just one of Sleepyhead's "undocumented features"?


I am not sure that I understand what you are seeing.
The machine doesn't know if you are awake or asleep. It can sense breathing but can't tell if you are awake or asleep breathing. SleepyHead just reports what the SD card data files hold.
Have you tried Encore software to see if it is reporting the same thing?
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Re: SleepyHead Tutorial Under Underconstruction

Post by napstress » Tue Jul 03, 2012 7:46 pm

yarrow wrote:Over in the left-hand column, with Details selected, at the very bottom, there's a section called Session Information which gives starting and ending times to the minute. You'll probably need to scroll down to see it. Here's an example:

Found them. Thanks, yarrow!

yarrow wrote:(There are three sessions because I often turn the machine off and then on again if I wake up briefly, because I'm trying to see the differences around the sleep/wake times.)

Brilliant! What a great idea!
Epworth Sleepiness Scale: 14
Diagnostic study: overall AHI: 0.2 events/hour; overall RDI: 45 events/hour
Titration study: AHI: 6.1; RDI: 27; CPAP pressures: 5-8cm

Not-tired behind my eyes and with a clear, cool head!