autoscan 5.7

rested gal wrote:

dsm wrote:The core data where the AI HI data is shown is from autoscan 5.4
-----
The point being discussed was HI AI data.

I may be completely wrong about this, but my understanding is that if a person has one single hypopnea of short duration, Autoscan draws a blue horizontal line all the way across that hour... drawing it from the point of time when the single hypopnea occurred, all the way across to the end of that hour. Even if the hypopnea did not last anywhere near that long. If that's so, that's one of the main things I did not find useful about presentation of data on Autoscan's graph.

So, I'm not sure if this statement is correct: "the further to the right the line goes, the longer the HIs are lasting."

dsm wrote:A hypop in AutoScan will show as the start of a blue line ( 'mountain'). The higher the line goes the greater the hypopnea index at that point, the further to the right the line goes, the longer the HIs are lasting.

Rested Gal

You may be right. I am trying to respond to these posts from an It conference n Sydney using a PDA

I will look at that post again later.

Cheers

DSM

[quote="dsm"]Snoredog

Your outburst is becomining odder by the post.

THAT DATA is NOT pressure IT IS airflow ???

It is NOT an Auto it is a bilevel.


Before leaping in as u did you could have asked me what it was I posted from. I had those composite web pages from recent well publicised tests.

The issue I was addressing was interpreting AI HI data in autoscan - that I did.

I am still trying to figure out what your problem is. I hope it isnt whisky


DS

[quote="Snoredog"][quote="dsm"]Snoredog

Your outburst is becomining odder by the post.

THAT DATA is NOT pressure IT IS airflow ???

It is NOT an Auto it is a bilevel.


Before leaping in as u did you could have asked me what it was I posted from. I had those composite web pages from recent well publicised tests.

The issue I was addressing was interpreting AI HI data in autoscan - that I did.

I am still trying to figure out what your problem is. I hope it isnt whisky


DS

someone mentioned about exporting the data - I tried that and I can count 14 hypopnoea to the first apnea(I brought it up in Excel)- However how would I be able to know at what time this occurred and for how long ? The apnea shows a value of 10 which makes sense that is 10 seconds . However under hypo is says 0. On the "Blue mountain" as it goes up would that mean that the hypo were longer or not.If lets say the 3rd hypo was less time in duration would the mountain start to go down. If I had only 1 hypo in the hour would it show a straight line across the hour - on my sleep studies my problem was mostly hypo that is why i'm trying to figure this out. Thanks to everyone who is trying to help.

halb wrote: If I had only 1 hypo in the hour would it show a straight line across the hour - on my sleep studies my problem was mostly hypo that is why i'm trying to figure this out. Thanks to everyone who is trying to help.

halb, that's the way I understand how Autoscan reports even a single hypopnea within each hour. Below is an exchange on another message board. This was the first time I was aware of the way the blue line is drawn across the hour -- if James Ball's info is correct, and I believe it is.

http://www.talkaboutsleep.com/message-b ... hp?t=11178

______________________________________

James Ball

Joined: 22 Sep 2004
Posts: 33


Posted: Wed, Jul 13 2005, 12:27 Post subject: Hypopneas for 45 min??

Frequenseeker,

It has been awhile since I have posted to this board. As you may recall, I have the Reslink and the associated software for the Resmed VPAP III. I have been monitoring my nightly data since Sept 9, 2004. One thing I noticed is that the software records events per hour and truncates the data at the beginning of each hour. So, if you have one or two HI's at the beginning of the hour, say 5:02 am, it will record 2 HI until 6:00 am. So, if you have 2 or 3 event at the beginning of the hour the rest of the hour will be a plateau until the next hour arrives and you start back at zero. I am thinking that this maybe what you are seeing in your data. The actual HI events probably last for a short time. In fact, as far as I can tell, the software does not tell you how long one is in an hypopnea state. The software will tell you how long you were in apneas by marking each event with a number (number of seconds in apnea) but it does not do this for HI. It simply puts a blue mark on the graph indicating an HI had occurred. You must have reduced respiration for at least 10 seconds to be marked as have an HI. If you were really having hyponeas for 45 min your HI would be very, very high. One time I had a cold and could not breathe through my nose and used a full face mask. It was better than nothing but not much better. There were stretches of time during the night where I had an AHI of 90+ - just like my sleep study. I was having a lot HI and AI and they were recorded as single events.

Bottom line, the software does not record time in HI. I do no think you were in hyponea for 45 min if the only indication you had was the software.

________________________________________


frequenseeker



Joined: 27 Mar 2004
Posts: 1192


Posted: Wed, Jul 13 2005, 15:50
Jim, whew thanks very much!!

Great to know that I am not being moribund for 45 minutes every time there is the dreaded long blue line on the graph

__________________________________________

thanks Rested gal

[quote="Snoredog"][quote="dsm"]Snoredog

Your outburst is becomining odder by the post.

THAT DATA is NOT pressure IT IS airflow ???

It is NOT an Auto it is a bilevel.


Before leaping in as u did you could have asked me what it was I posted from. I had those composite web pages from recent well publicised tests.

The issue I was addressing was interpreting AI HI data in autoscan - that I did.

I am still trying to figure out what your problem is. I hope it isnt whisky


DS

rested gal wrote:

dsm wrote:The core data where the AI HI data is shown is from autoscan 5.4
-----
The point being discussed was HI AI data.

I may be completely wrong about this, but my understanding is that if a person has one single hypopnea of short duration, Autoscan draws a blue horizontal line all the way across that hour... drawing it from the point of time when the single hypopnea occurred, all the way across to the end of that hour. Even if the hypopnea did not last anywhere near that long. If that's so, that's one of the main things I did not find useful about presentation of data on Autoscan's graph.

So, I'm not sure if this statement is correct: "the further to the right the line goes, the longer the HIs are lasting."

dsm wrote:A hypop in AutoScan will show as the start of a blue line ( 'mountain'). The higher the line goes the greater the hypopnea index at that point, the further to the right the line goes, the longer the HIs are lasting.

Rested Gal,

Yes you are right re the blue line to the right being the HI index for that hour & not the duration of the hypopnea. Thanks.

Also re your other point that I should have told everyone in advance that the 2nd referred to web page containing AutoScan data was from my stats web site & also had data in there from my Ohmeda. Explain to me how I was supposed to know that Snoredog was going to explode. RG, all SD had to do was post a question such as ...

"DSM what is all that data you posted in the 2nd link - where did it come from"

but SD chose to go ballistic & defecate on himself in front of us all, not just once but thrice. I am also surprised you felt it neccessary to step in and shield him fom the mess he created for himself.

I had no idea this thread was in any way one that would confuse innocent readers about the implicit evils of Resmed software. Really ?

The whole snoredog saga here has shown just how 'rabidly' he feels about Resmed & its software. So much so that he missed the point repeatedly having launched headfirst in baseball bat swinging, with no warning, & on top of that then admits he really knows little about Resmed machines & their output and how they appear in Autoscan software. Nice!.



Cheers

DSM

_________________

CPAPopedia Keywords Contained In This Post (Click For Definition): resmed, Hypopnea

halb wrote:someone mentioned about exporting the data - I tried that and I can count 14 hypopnoea to the first apnea(I brought it up in Excel)- However how would I be able to know at what time this occurred and for how long ? The apnea shows a value of 10 which makes sense that is 10 seconds . However under hypo is says 0. On the "Blue mountain" as it goes up would that mean that the hypo were longer or not.If lets say the 3rd hypo was less time in duration would the mountain start to go down. If I had only 1 hypo in the hour would it show a straight line across the hour - on my sleep studies my problem was mostly hypo that is why i'm trying to figure this out. Thanks to everyone who is trying to help.

Although AutoScan does not tell you the duration or how long the hypops are, you can tell how many you had within each hour (it is hard to make out but the elevation or height of the blue line "mountain" shows how many) by matching height with the blue y-axis on the right. You can also tell when each hypop occurred during each hour as well (each time there is a change in elevation of the blue line is when the hypops occurr) by correlating the jumps of the blue line with the time scale on the x-axis on the bottom.

- r