EERS Experiment Data (sherwoga)

[sherwoga]

A lot better than my solution lol (t-shirt wrapped around tubing). Can you post some close ups of the flow rate where you're not having an event?

Will these do?

   

[sherwoga]

Tidal Volume is significantly up for this run with the 18-inch EERS.  What does that mean?

My hypothesis is that TV/MV will go up relative to the amount of deadspace. So 18-inches should result in higher TV/MV than 12-inches, which should be higher than 6.

Will see what the graphs look like in the end though!

But this brings up a bigger question: what is an appropriate range of TV/MV, and what is too much?

I don't know; there was some discussion of this on my thread, but no real conclusions.

To avoid ambiguity, I need to ask about your use of the designation "TV/MV".  Is that meant to imply the calculation of the ratio TV over MV or is more simply a way of listing both TV and MV?

[slowriter]

Tidal Volume is significantly up for this run with the 18-inch EERS.  What does that mean?

My hypothesis is that TV/MV will go up relative to the amount of deadspace. So 18-inches should result in higher TV/MV than 12-inches, which should be higher than 6.

Will see what the graphs look like in the end though!

But this brings up a bigger question: what is an appropriate range of TV/MV, and what is too much?

I don't know; there was some discussion of this on my thread, but no real conclusions.

To avoid ambiguity, I need to ask about your use of the designation "TV/MV".  Is that meant to imply the calculation of the ratio TV over MV or is more simply a way of listing both TV and MV?

Oh sorry!

No; just meant they're related, as MV is derived from TV.

[JoeyWallaby]

Will these do?

Yes. You have bad flow limitation on these charts. Is that EPR off or EPR 3?

[sherwoga]

Will these do?

Yes. You have bad flow limitation on these charts. Is that EPR off or EPR 3?

This is last nights data.  Dec 1.  EPR was at 3.  Compare the Events graphs in these zooms with the Events graph in Post #7 to 1) confirm my claim that this is last nights data and 2) to see EPR setting in the settings window pain on the left.

I originally entered the wrong date on the post this morning (#7).  I did try to correct it in Post #10. I can't edit a post, but I issued the correction in Post #10.  If that wrong date entry/correction is causing confusion, I apologize.

[slowriter]

Will these do?

Yes. You have bad flow limitation on these charts. Is that EPR off or EPR 3?

I suspect in the end sherwoga will want to get a bilevel. 

But the focus here is testing the impact of EERS, which is what might allow him to use, and benefit from, a bilevel at higher PS.

[JoeyWallaby]

[sherwoga]

12/02/2019 EPR(Min Pressure),ESSR pair = 0(5),0 Sequence #4 Design #12

Note:  This is a replication (repeat) of the conditions used two nights ago on 11/30.  

           

Including a Zoom (3-minutes at about 2:00 AM) of Events, Flow Rate, AND Respiration Rate graphs OVERLAID on (and beneath) the same graphs for the Full Session.  I note very noisy flow rate patterns during this period of erratic respiration rate.  Any insights?

   

[slowriter]

12/02/2019 EPR(Min Pressure),ESSR pair = 0(5),0 Sequence #4 Design #12

Note:  This is a replication (repeat) of the conditions used two nights ago on 11/30.  

Including a Zoom (3-minutes at about 2:00 AM) of Events, Flow Rate, AND Respiration Rate graphs OVERLAID on (and beneath) the same graphs for the Full Session.  I note very noisy flow rate patterns during this period of erratic respiration rate.  Any insights?

Here's an open access research article that is part of what was behind Joey's question. See Table 1, Figure 5.

[sherwoga]

12/02/2019 EPR(Min Pressure),ESSR pair = 0(5),0 Sequence #4 Design #12

Note:  This is a replication (repeat) of the conditions used two nights ago on 11/30.  

Including a Zoom (3-minutes at about 2:00 AM) of Events, Flow Rate, AND Respiration Rate graphs OVERLAID on (and beneath) the same graphs for the Full Session.  I note very noisy flow rate patterns during this period of erratic respiration rate.  Any insights?

Here's an open access research article that is part of what was behind Joey's question. See Table 1, Figure 5.

 I printed the article and read it once, with perhaps 80% comprehension .  I struggled with the medical jargon, the heavy use of acronyms, and the presumption of a working knowledge of the different stages of sleep (a knowledge I don't possess ).  It is written, after all, for medical professionals with expertise in sleep problems.  It will take a couple more readings to understand it better.  

My observation in my post this morning focused on "erratic respiration rate".  I don't think this article, while extremely enlightening, refers directly to respiration rate.  When I reread it, should I be looking for indirect references?

I've overlaid popped out Respiration Rate graphs for 11/30, 12/1, and 12/2.  Graphs for the first and last are for identical settings (EPR 0ff or 0, Min Pressure at 5, and No EESR or 0).  The middle graph is for the setting EPR 3,  Min Pressure at 8, and 18 inches of EESR or 18.  I observe that the middle graph displays a substantially more stable respiration rate than the other two.  Do you concur? Is this the beginning of some understanding of how to treat IFL (inspiratory flow limitation), if indeed this is the cause of my sleepiness? Is there another designed experiment in my future (after this one is completed)?

Tonight's settings will be a replication (repeat) of 12/1. When I randomized my experiment, the order just worked out that way.  It was not done be intention.  Even so, it will be interesting to see if the observation reported here holds up.