Input Needed for New Encore Pro Analyzer

greyhound · Post by **greyhound** » Fri Nov 17, 2006 2:08 pm

Actually, EncorePro (not MyEncore) does report the average time spent in apnea on the last page of the full details report. However, even if you ask for the report for a range of dates that do not include the last day in the download, it insists on including that last day in the reported average.

With respect to what James reported, I had one night (an unusually good one) in which I had 1 obstructed apnea and 2 hypopneas and only 6 seconds spent in apnea. Now this time couldn't have included the 2 hypopneas.

jskinner · Post by **jskinner** » Fri Nov 17, 2006 11:01 pm

ozij wrote: Could it be that the M series with has a separate "time spent in hypopnea" field somewhere?

I haven't seen one in the DB tables.... Thats not to say that its not there, its a big ugly mess in there

-james

ozij · Post by **ozij** » Sat Nov 18, 2006 1:30 am

greyhound wrote: Actually, EncorePro (not MyEncore) does report the average time spent in apnea on the last page of the full details report. However, even if you ask for the report for a range of dates that do not include the last day in the download, it insists on including that last day in the reported average.

My mistake, I edited my previous post...

greyhound wrote: With respect to what James reported, I had one night (an unusually good one) in which I had 1 obstructed apnea and 2 hypopneas and only 6 seconds spent in apnea. Now this time couldn't have included the 2 hypopneas.

I'm not sure I follow your reasoning - do 6 seconds spent in one apnea make more sense than 6 seconds on the average in one apnea and 2 hypopneas?

A big bad mess is probably right not only database-wise: Do we know when Respironics starts counting time in apnea? Does is start from the first second it idenified the event? Does is start from the last pressure raise needed to handle the event? Does it start from a time threshold arbitrarily defined after the event was identified?

By the way - is time spent in apnea reported in CPAP mode on autos? On Pro 2 machines? M series Pro machines?

O.

greyhound · Post by **greyhound** » Sat Nov 18, 2006 8:11 am

ozij, I should clarify what EncorePro reports on the last page of its Full Details report.

The average time spent in apnea, is the average time per day (subject to the bug I mentioned earlier) - not time per event. So, in the instance I gave earlier, either I had one obstructive apnea that took six seconds, or one OA and two hypopneas which took 6 seconds altogether.

jskinner · Post by **jskinner** » Sat Nov 18, 2006 9:18 am

ozij wrote: A big bad mess is probably right not only database-wise: Do we know when Respironics starts counting time in apnea? Does is start from the first second it idenified the event? Does is start from the last pressure raise needed to handle the event? Does it start from a time threshold arbitrarily defined after the event was identified?

Only Respironics could say for sure, however my assumption is that its from the first of the identified event to its end (only makes sense)

ozij wrote: By the way - is time spent in apnea reported in CPAP mode on autos? On Pro 2 machines? M series Pro machines?

All of them I suspect. I've seen it on an M Series Pro, M Series Auto, and REMstar Auto

jskinner · Post by **jskinner** » Wed Nov 29, 2006 6:49 pm

I've got a question about the C-Flex and Humidifier settings graphs (available only with M Series machines apparently). Currently I am taking the last setting of the night as the one I use in the graph. However I am thinking now that maybe averaging the settings over the night would be better since I'm sure occasionally people change there humidifier settings during the night (I know I have a few times)

Would people prefer this averaged approach? It would of course result in non integer values sometimes, which some people might finding confusing? However I think an average is more accurate of what happened during the night?

Thoughts?

-James

Donkey_On_The_Edge · Post by **Donkey_On_The_Edge** » Wed Nov 29, 2006 7:32 pm

Hi James,

I get this error message after installing the update. "ZedGraphSample has encountered a problem and needs to close"

The previous version worked great until I installed this one.

Any suggestions?

greyhound · Post by **greyhound** » Wed Nov 29, 2006 8:28 pm

I think averaging the cflex settings makes sense.

jskinner · Post by **jskinner** » Wed Nov 29, 2006 9:22 pm

Donkey_On_The_Edge wrote: I get this error message after installing the update. "ZedGraphSample has encountered a problem and needs to close"
The previous version worked great until I installed this one.
Any suggestions?

Yes a few people have had this problem. It requires that you uninstall all old versions of EPA first. You should also delete any old versions of betas before there was an installer.

Once you do that, reinstall and it should work properly.

Cheers, -james

tomjax · Post by **tomjax** » Sun Dec 03, 2006 6:59 am

I downloaded the software and have opened it a couple of times and tried to digest the awesome reporst.

One confusing thing is that the leak and snore graphs are all over the place. Rather than being a graph that represents the true trend of a persons data, it includes those anomalies- I suppose that includes bathroom trips and brief removal of the mask for phone ets.

Is it possible to factor these events in and report a more accurate graph? Kinda like removing the highest and lowest scores in an olympic event and reportine the middle and more representative data?

Still trying to figure out how to narrow the range of data from a year to a smaller time frame. The problem is my expertise, not the software.
Congrats on a very valuable piece of work and hope you get it polished.
Tom

This thread needs to be back on the main page.

greyhound · Post by **greyhound** » Sun Dec 03, 2006 8:52 am

tomjax, there's a drop down box on the third line that has a time period. If you click on its down arrow, you'll see periods ranging from one week to all data. Select the time period you want. Also, make sure the period end date, immediately to the right of this box, contains the period end date you want. If it doesn't, use the drop down arrow and select the date you do want.

With respect to bathroom breaks, I think you'll get the results you want if you turn off your cpap, rather than leaving it on, when you take your break.

twb119 · Post by **twb119** » Sun Dec 03, 2006 9:10 am

On any graph that has a dates on the bottom click on the graph to pull up a night report for that date. Also you can zoom in on any graph by left clicking and draging, to zoom back out click on the refresh button(green arrows in a circle).

SelfSeeker · Post by **SelfSeeker** » Sun Dec 03, 2006 10:01 am

James,

Once again, thanks for all the work you put in to it.

Jumping in here a bit late, but would like to voice my opinions as well.

Hypo should be recorded as well.

I like the 4 hours for compliance or considered a night.

My thinking the more data kept like other standards, the more exceptable the anylizer data would be to doctors.

For averages, it may not be more accurate but the average calculated for the daily AHI instead of recalculate with all the hours is what I would expect to be done. It seems more right. (Could be way off base.)

I agree with whoever said they would like to see a breakdown of variable breathing. I would love to see that during the night, maybe even with other results at the sme time. Something like the APAP print out, with the hours into it, and the line graph with the percentages and where the H, O and flow limitations is happening, would really give a picture of what is happening. At least I hope it would.

jskinner · Post by **jskinner** » Sun Dec 03, 2006 10:08 am

greyhound wrote:tomjax, there's a drop down box on the third line that has a time period. If you click on its down arrow, you'll see periods ranging from one week to all data. Select the time period you want.

You can also type arbitrary start dates into this time period combo box. Its not obvious right now that this is possible so I should improve that sometime. For example:

Oct 5
9.5 weeks
1/1/2005
etc...

-James

munsterlander · Post by **munsterlander** » Sun Dec 03, 2006 9:20 pm

James, I agree with averaging. My patterns change as I get closer to morning.

Thanks to your data I have learned that:
1: My mask was to tight. After loosening it my leak rate dropped by 30%.
2: Turning off cflex dropped my AHI from 1.8 to .9.
3: Turning off clfex increased my snores from 2 to 3.

This was a change from cflex 3 to "off". I want to try cflex = 1 and see what happens.

I can tell you that increasing my pressure resulted in double the numbers of AHI and I had an OHI that I never had on the lower setting. I believe finding the right pressure setting is critical to treatment and going high is just as critical as to low.

Any data that will help correlate pressure to cflex to instances is extremely helpful for best treatment.

Thanks for all you have done.

Jim