the amazing adventures of zonker and his marvelous devilbiss intillipap autoadjust machine

given the perilous times we live in, i thought it would be best to find an alternative to my resperonics machine. i'm not at all certain that the devilbiss is it, but i thought i'd give it a try.

this machine has been by my side as we sallied forth to arizona for that failed experiment. and now back to the pacific northwest, where i was meant to be.

the devilviss, then, was my first machine. i know WHY i bought it; i'm c-h-e-a-p and cpap.com had it on sale. so i got it and tried it for at least a good year, but was never really satisfied with it. i can't really tell you if that was just a typical newbie trying to get used to therapy or if i really didn't like the machine.

at any rate, it's been living in it's wee carry bag for years now. thought it was time to drag it out. i've used it for the past two nights and it needed some adjustment. set it to my typical 18 min 20 max settings. i set the "epr"(herein called smartflex) to three and away i went.

here's the last two nights worth of oscar data-





want to give this a couple of more nights to see if it levels out. the ahi is a bit higher than i usually get. so i'll see if'n it lowers with more time or if'n i need to raise my minimum.

no painful aerophagia so that's something i don't have to worry about.

i'm going to slowly raise my humidity to try to stave of dry mouth.

but, the one thing that really stands out to me. oscar reports i have one hundred large leak. how can i have an ahi of first 2.61 then 1.43 if i'm leaking that badly?

am hoping someone will amble by and take a look.

would appreciate opinions.

If you try other masks from Cpap.com that you can return within a month, you'll find out more about the one you have - compared to the others, and maybe discover what's not working and why.

I like the IP machine a lot, not sure why you don't, but apart from a small water tank, is there anything other reason?

Are you sure you have a large leak?

The Large leak threshold (24 LPM) is a ResMed thing, which is excess leak above venting. Those values may be perfect fine for DeVilbis which likely reports venting.

The gray excess is likely set for the ResMed default.

According to this DeVilbiss document the threshold where the DeVillbiss Auto algorithm can no longer reliably provide therapy is 95LPM which are are below.

http://www.devilbisshealthcare.com/file ... erview.pdf

Julie wrote: ↑

Tue Jun 22, 2021 5:08 pm

If you try other masks from Cpap.com that you can return within a month, you'll find out more about the one you have - compared to the others, and maybe discover what's not working and why.

I like the IP machine a lot, not sure why you don't, but apart from a small water tank, is there anything other reason?

i'm hesitant to give up my P10 mask, though it may come to that. i'm uncertain, really, if i had the P10 when i first used the devilbiss.

i don't know why i gave up on the machine. as i said in my op, it may just have been my "newbieness" and i could've just stuck with it. dunno. i could barely think due to apnea back in those days.

(i can barely think NOW, but that's for other rasons!)

Dog Slobber wrote: ↑

Tue Jun 22, 2021 5:19 pm

Are you sure you have a large leak?

The Large leak threshold (24 LPM) is a ResMed thing, which is excess leak above venting. Those values may be perfect fine for DeVilbis which likely reports venting.

The gray excess is likely set for the ResMed default.

maybe i didn't make that clear. i was prolly typing too fast.

i DON'T think i have a large leak at all. it's oscar what says it, not me. i don't feel ANY leak from anywhere, so i'm wondering if oscar is reading something incorrectly.

see where it says 100 percent large leak in the breakdown box below the ahi number?

Dog Slobber wrote: ↑

Tue Jun 22, 2021 5:27 pm

According to this DeVilbiss document the threshold where the DeVillbiss Auto algorithm can no longer reliably provide therapy is 95LPM which are are below.

http://www.devilbisshealthcare.com/file ... erview.pdf

i'm not seeing anything that is telling lpm. it's confusing to me because i've never had to deal with leak rates before.

on the night of the 1.43 ahi, when i scroll down, i see-

min med 95% max
35.00 39.00 41.00 45.00

further down i see time over leak redline 100.000%

is there somewhere else i should be looking?

Devilbiss machines report leak like Respironics does...the total leak thing and the machine itself is flagging the large leak...on the graphs.

Do an awake test and see what it shows...about 30 minutes awake and you know your mask isn't leaking.
Then do a check for connections and hose for any leaks as well as water chamber.
While I would expect the numbers you are seeing since it reports like the old Respironics reports and 90 L/min is actually not all that abnormal...it shouldn't be flagging the large leak unless OSCAR is misreading something.
It's been a long time since I have seen a DeVilbiss report on SleepyHead ...much less OSCAR.

If you do the awake test (and you know there are no leaks) and it still shows the large leak on the detailed report and you can't find something wrong with hose or chamber or whatever...I am inclined to blame it on a bit of software incompatibility and move on with it.
The AHI will be different....different criteria for flagging.

The leak numbers themselves...what I would expect from a DeVillbiss machine at the pressures you are using since the vent rate is included in that top leak line....and come to think of it might be scaring the machine a bit.

Pugsy wrote: ↑

Tue Jun 22, 2021 6:41 pm

Do an awake test and see what it shows...about 30 minutes awake and you know your mask isn't leaking.

will do, though not straight away.

will let ya know.

Pugsy wrote: ↑

Tue Jun 22, 2021 6:41 pm

Devilbiss machines report leak like Respironics does...the total leak thing and the machine itself is flagging the large leak...on the graphs.

Do an awake test and see what it shows...about 30 minutes awake and you know your mask isn't leaking.
Then do a check for connections and hose for any leaks as well as water chamber.
While I would expect the numbers you are seeing since it reports like the old Respironics reports and 90 L/min is actually not all that abnormal...it shouldn't be flagging the large leak unless OSCAR is misreading something.
It's been a long time since I have seen a DeVilbiss report on SleepyHead ...much less OSCAR.

If you do the awake test (and you know there are no leaks) and it still shows the large leak on the detailed report and you can't find something wrong with hose or chamber or whatever...I am inclined to blame it on a bit of software incompatibility and move on with it.
The AHI will be different....different criteria for flagging.

The leak numbers themselves...what I would expect from a DeVillbiss machine at the pressures you are using since the vent rate is included in that top leak line....and come to think of it might be scaring the machine a bit.

viola!




apparently, oscar decided to run my 1/2 hour test into my usual bedtime and capture it all.

no leaks from hose or machine. only air is that coming up the hose and into my mask. then up my nose and through the vents. all as one would expect.

i notice that my leak rate reports differently. and also, no grey large leak in my actual sleep session, just on the sleep test. does that mean anything?

let me know if you want me to do another test a little further separated from bed time.

thanks, guys.