Sleepy Head chart

Well last night went a little better. I changed my min pressure to 8. Changing sleep position helped improve my leaks, I also kept the mask on all night for about 6.5 hirs. My ACI didn't drop as much as I hoped. It's still at 8.5. I'll try where I'm at for a few nights and see if there is improvement. Thanks for all the advise!

Mark

Flyfisherman69 wrote:Well last night went a little better. I changed my min pressure to 8. Changing sleep position helped improve my leaks, I also kept the mask on all night for about 6.5 hirs. My ACI didn't drop as much as I hoped. It's still at 8.5. I'll try where I'm at for a few nights and see if there is improvement. Thanks for all the advise!

Mark

You kept the mask on longer and your AHI was lower. That is progress.
As you continue to improve your minimum pressure setting, your results will likely improve. This is what I am learning.

My guess is that 9-10 is where you will end up.

As far as I know, there is no protocol on setting the min pressure.
If the auto algorithms were perfect for everyone, then setting the range would not matter since the machine would adjust perfectly. But since they are not, settings matter. In that case, you don't want to drift too far from home. Having pressure drifting lower than needed is nice, but not if the slow response to action caused AHI.
Finding the correct lower pressure level seems to be important.

The 90/95% pressure isn't the "holy grail" for anything in terms of setting either the minimum or maximum pressure.
It's just a number that is too easily skewed by relatively short periods of time at higher pressures for it to be any sort of reliable indicator of much of anything when looking at it short term...now long term looking at it might be a different story but I am talking long term like 6 months or more.

Often when the minimum pressure is more optimally set then the 90/95% numbers will come down anyway because the machine is doing a better job preventing the situations where more pressure is needed in the first place.
They do their best job preventing...not fixing after the fact.

If I were going to use a "number" offered by the software reports it would be the overall average number where I would start in my evaluation process and not the 90/95% number at all.

Looks like Photobucket wants me to upgrade (translation ...buy something) so my images are blocked...but if you read this thread you can get an idea why I don't use 90/95% numbers as the holy grail of anything. I particularly had to chuckle at NotMuffy's comment

And the biggest reason why P90 unto itself may offer incomplete information. 90% of stupid is still stupid.

viewtopic.php?f=1&t=61734&st=0&sk=t&sd= ... holy+grail
For those of you who don't know NotMuffy....His job is running a sleep lab at a big hospital...so he knows this stuff inside and out.
Doing sleep studies with and without cpap (titration) is what he does for a living.

Well crap...now I have to move my old Photobucket images elsewhere. They used to not care about embedded images but now they care. They can go you know where.

xxyzx wrote:

TedVPAP wrote:

Flyfisherman69 wrote:Well last night went a little better. I changed my min pressure to 8. Changing sleep position helped improve my leaks, I also kept the mask on all night for about 6.5 hirs. My ACI didn't drop as much as I hoped. It's still at 8.5. I'll try where I'm at for a few nights and see if there is improvement. Thanks for all the advise!

Mark

You kept the mask on longer and your AHI was lower. That is progress.
As you continue to improve your minimum pressure setting, your results will likely improve. This is what I am learning.

My guess is that 9-10 is where you will end up.

As far as I know, there is no protocol on setting the min pressure.
If the auto algorithms were perfect for everyone, then setting the range would not matter since the machine would adjust perfectly. But since they are not, settings matter. In that case, you don't want to drift too far from home. Having pressure drifting lower than needed is nice, but not if the slow response to action caused AHI.
Finding the correct lower pressure level seems to be important.

==========

actually there is a protocol

it is in the titration manuals

resmed and philips pretty much identical
there are also write ups by hospitals and others in the biz
pretty much all agree on the basics of doing it

Do you have links?

TedVPAP wrote:

xxyzx wrote:it is in the titration manuals

resmed and philips pretty much identical

Do you have links?

mr know it all wrong's suggestion is applicable if one happens to have a lab machine (which I do), and wants to titrate someone's pressure settings over night.

they're not really applicable to reading sleepyhead/resscan/encore graphs and making suggestions.

Thanks for the links - good material.
Unfortunately I didn't see any insights as to how best tune the Auto minimum pressure setting. Since the algorithm can't be perfect for everyone, I was thinking there might be some general guidance when attempting to fine tune.

Yes, they all say where to start. But no insight as how best to fine tune from there. I think the insight needs to come from the user community as they are the only ones running their own long term study as they search for their best settings.
I have no centrals and my AHI is good (1.5 or less). Some morning feel better than others. I will continue to do my own tuning (which takes months) and if I develop any insights, I will post them.

xxyzx wrote:

TedVPAP wrote:Yes, they all say where to start. But no insight as how best to fine tune from there. I think the insight needs to come from the user community as they are the only ones running their own long term study as they search for their best settings.
I have no centrals and my AHI is good (1.5 or less). Some morning feel better than others. I will continue to do my own tuning (which takes months) and if I develop any insights, I will post them.

==========

your data says what changes to make

nobody else can give you a better starting point than the manual
nor can they know what changes you should make until you have data

should not take months
they typically do it in one night even half a night

only takes a relatively small number of iterations

Clearly there continues to be a misunderstanding so I will stop trying. Thanks again for the links.