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buran wrote: Note that we are talking here about spontaneous breathing ("Pat. Trig. Breaths"), not about what ASV machine does during central apnea.

Right, yes. I rarely have centrals on CPAP/APAP/ASV. I'm focusing on Patient Triggered Breaths.

Perhaps a BiPAP is the way to go after all...

buran wrote: Note that we are talking here about spontaneous breathing ("Pat. Trig. Breaths"), not about what ASV machine does during central apnea.

well, given that we've never (to the best of my recollection) seen what the machine is doing, since jj posts little snippets of things... who's to say what's happening?

justinjustin wrote:

buran wrote: Note that we are talking here about spontaneous breathing ("Pat. Trig. Breaths"), not about what ASV machine does during central apnea.

Right, yes. I rarely have centrals on CPAP/APAP/ASV. I'm focusing on Patient Triggered Breaths.

Perhaps a BiPAP is the way to go after all...

do you have any data from pre-asv days? can you put it up on dropbox and pm me a link?

cnaumann wrote:

I have a very limited experience (one week only and I had no software to monitor pressure waveforms) with Respironics ASV (now it is my back up machine).

The latest test version of sleepyhead will display the pressure waveform.

Thank you cnaumann! Now I see that the latest version of Encore Basic also can read PR 960 ASV data, so I can have detailed waveform report (unfortunately SH does not have this option).
I do not have my PR machine now, but still have data from my 1 week "blind" tests. So I just want to illustrate my point with two random pressure waveform recordings (both are approximately 8 hours long with approximately the same parameters)
Top: PR ASV Bottom ResMed ASV:

Well, I'm not sure how to quantify it, but subjectively, ResMed PS fluctuates way more than PR PS. Look at all these IPAP spikes in ResMed. And the width of the "blue band" in PR pressure remains constant most of the time (even though PS is allowed to fluctuate).
Again, this figure may be not representative (maybe subconsciously I've selected the most extreme cases), but the data in the references in my first post is definitely more trustable.
This makes me think that I should use Respironics ASV instead of ResMed. Anyway I need more time to read and experiments with it to understand it better, since I now can see the data.

buran wrote:so I can have detailed waveform report (unfortunately SH does not have this option)..

how much more "detailed" would you like it?

palerider wrote:

buran wrote:so I can have detailed waveform report (unfortunately SH does not have this option)..

how much more "detailed" would you like it?

I want it that detailed:

This is one page taken from PR Encore Basic report. It generates several PDF pages per night. In fact this is what my doctor wanted me to email him (but at that time I've used S9 AutoSet and Rescan can not do it as well), just because he does not have time to scroll SH view (and he did not have SH at that time).
This representation is very convenient if you want to see the waveforms dynamics (not many doctors want or able to do it, and some do not know that waveforms even exists/recorded) and want to see the big picture (evolution). With SH I have to constantly scroll back since I do not always remember how waveform looked like 5 min ago.

buran wrote:With SH I have to constantly scroll back since I do not always remember how waveform looked like 5 min ago.

clone it.

buran wrote:

cnaumann wrote:

I have a very limited experience (one week only and I had no software to monitor pressure waveforms) with Respironics ASV (now it is my back up machine).

The latest test version of sleepyhead will display the pressure waveform.

Thank you cnaumann! Now I see that the latest version of Encore Basic also can read PR 960 ASV data, so I can have detailed waveform report (unfortunately SH does not have this option).
I do not have my PR machine now, but still have data from my 1 week "blind" tests. So I just want to illustrate my point with two random pressure waveform recordings (both are approximately 8 hours long with approximately the same parameters)
Top: PR ASV Bottom ResMed ASV:

Well, I'm not sure how to quantify it, but subjectively, ResMed PS fluctuates way more than PR PS. Look at all these IPAP spikes in ResMed. And the width of the "blue band" in PR pressure remains constant most of the time (even though PS is allowed to fluctuate).
Again, this figure may be not representative (maybe subconsciously I've selected the most extreme cases), but the data in the references in my first post is definitely more trustable.
This makes me think that I should use Respironics ASV instead of ResMed. Anyway I need more time to read and experiments with it to understand it better, since I now can see the data.

now that's what I'm looking for. Do you have any detailed waveform comparisons to show the spikes?