Aircurve Vauto vs Fixed

palerider · Post by **palerider** » Tue May 19, 2020 10:22 am

Apneak wrote: ↑
Tue May 19, 2020 9:19 am
What do you guys make of really gnarly sections like this? does it have anything to do with treatment?

Looks like you turned over, or something similar, woke up a bit, took a few deep breaths, and that's all I see.

slowriter · Post by **slowriter** » Tue May 19, 2020 11:03 am

You can easily obsess too much on details, and lose the forest for the trees.

If your breathing wave forms generally look good, and you have brief arousals a few times per night, you should probably conclude you're doing fine.

If, on the other, you see that pattern 50 times a night, and you wake up for longer than a few minutes multiple times, then you might want to figure that out.

Apneak · Post by **Apneak** » Tue May 19, 2020 12:18 pm

ok, thanks guys!

Apneak · Post by **Apneak** » Tue May 19, 2020 12:22 pm

Any tips on how to cut down the CA events? I know some of them are because of me moving (false positives) but some of them do seem legit, and elevated in comparison to the APAP therapy...you mentioned that adjusting the trigger senstivity to high helped some people....why would that be the case? I'd tried that but found it uncomfortable, like the machine was forcing me to breath faster than natural....

chunkyfrog · Post by **chunkyfrog** » Tue May 19, 2020 12:29 pm

Comfort is key, because sleeping is essential.
As for little bits of weird stuff--sometimes you just have to let it be.

slowriter · Post by **slowriter** » Tue May 19, 2020 1:52 pm

Apneak wrote: ↑
Tue May 19, 2020 12:22 pm
Any tips on how to cut down the CA events? I know some of them are because of me moving (false positives) but some of them do seem legit, and elevated in comparison to the APAP therapy...you mentioned that adjusting the trigger senstivity to high helped some people....why would that be the case? I'd tried that but found it uncomfortable, like the machine was forcing me to breath faster than natural....

Trigger doesn't "force" breaths. It just determines how sensitive the machine is to changing to IPAP; to when you start the next breath.

I think it reduces CAs for that reason.

palerider · Post by **palerider** » Thu May 21, 2020 2:00 pm

Apneak wrote: ↑
Tue May 19, 2020 12:22 pm
Any tips on how to cut down the CA events? I know some of them are because of me moving (false positives) but some of them do seem legit, and elevated in comparison to the APAP therapy...you mentioned that adjusting the trigger senstivity to high helped some people....why would that be the case? I'd tried that but found it uncomfortable, like the machine was forcing me to breath faster than natural....

All Trigger does is change how sensitive it is to your starting to breathe in. it doesn't rush your breathing, because it doesn't *start* till YOU start breathing in.

It won't help with CSA, because it won't switch to ipap till YOU start to breathe in.

Apneak · Post by **Apneak** » Sun May 31, 2020 9:52 am

Question for you guys:

Is an Aircurve with a Pressure Support of 3 delivering better therapy than a Autoset wtih EPR of 3 (both on auto-mode, same range)? Why/ Why not?

slowriter · Post by **slowriter** » Sun May 31, 2020 10:32 am

Apneak wrote: ↑
Sun May 31, 2020 9:52 am
Is an Aircurve with a Pressure Support of 3 delivering better therapy than a Autoset wtih EPR of 3 (both on auto-mode, same range)? Why/ Why not?

I don't think so, unless for some reason being able to modify the other settings (trigger, cycle, Ti) has an impact.

They're the same hardware, and my understanding is the basic firmware algorithms are pretty much the same. Exactly how much the same is my only uncertainty.

Apneak · Post by **Apneak** » Sun May 31, 2020 11:12 am

One thing I do notice is that the inspiration time stays much steadier on the Curve...even given enough of a range to move (.8-3s), it stays around 1.3 +/- .2s

I also noticed that the algorithm is more sensitive to flow limitations on the Curve.

Miss Emerita · Post by **Miss Emerita** » Sun May 31, 2020 11:50 am

I'm not sure the VAuto is more sensitive to FLs. But PS greater than the 3 available with the Autoset can reduce FLs, sometimes dramatically.

I meant to mention: in the charts you posted earlier, you had a lot fewer CAs with PS of 4 than with 4.4. What PS setting do you have now?

palerider · Post by **palerider** » Sun May 31, 2020 5:21 pm

Apneak wrote: ↑
Sun May 31, 2020 9:52 am
Question for you guys:

Is an Aircurve with a Pressure Support of 3 delivering better therapy than a Autoset wtih EPR of 3 (both on auto-mode, same range)? Why/ Why not?

No, it's identical, unless you've fiddled with trigger/cycle/TiMin/TiMax

palerider · Post by **palerider** » Sun May 31, 2020 5:22 pm

Apneak wrote: ↑
Sun May 31, 2020 11:12 am
One thing I do notice is that the inspiration time stays much steadier on the Curve...even given enough of a range to move (.8-3s), it stays around 1.3 +/- .2s

I also noticed that the algorithm is more sensitive to flow limitations on the Curve.

There's no documented information to support this supposition.

Aircurve Vauto vs Fixed

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Re: Aircurve Vauto vs Fixed