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dsm wrote:The way that Centrals are dealt with in a normal Bilevel is using the epap-ipap cycling at a particular rate (determined by the Breaths-per-minute timed rate or the Breaths per minute back-up rate, depending on how the machine was set up).

One small clarification -- that's describing what a bilevel S/T (spontaneous/timed) machine does.

I wouldn't call a Bilevel S/T machine a "normal" bilevel. But that's just me. To me, a "normal" or "regular" bilevel machine is one that uses separate EPAP/IPAP pressure settings but does not have any kind of timed back up rate capability. A "normal" bilevel machine doesn't have "S/T" at the end of its name.

Wouldn't want people who use a "normal" bipap futilely looking for a Breaths Per Minute setting that doesn't exist.

RG and dsm - thanks for the explanations! I had not understood the timing aspect, or the intention behind the cycling - but now the previous posts make more sense! Obviously this is a whole 'nuther ball game than simple APAP ... thanks!

rested gal wrote:

dsm wrote:The way that Centrals are dealt with in a normal Bilevel is using the epap-ipap cycling at a particular rate (determined by the Breaths-per-minute timed rate or the Breaths per minute back-up rate, depending on how the machine was set up).

One small clarification -- that's describing what a bilevel S/T (spontaneous/timed) machine does.

I wouldn't call a Bilevel S/T machine a "normal" bilevel. But that's just me. To me, a "normal" or "regular" bilevel machine is one that uses separate EPAP/IPAP pressure settings but does not have any kind of timed back up rate capability. A "normal" bilevel machine doesn't have "S/T" at the end of its name.

Wouldn't want people who use a "normal" bipap futilely looking for a Breaths Per Minute setting that doesn't exist.

RG thanks for the thought

My context in that post was an SV bilevel & an S/T Bilevel - so the S/T is the normal of those two. Both do timed mode but the SV goes way beyond.
Also did you not see my words 'normal timed bilevel' in the post you referenced - how more clearly could it have been put ?

In another post elsewhere (cpaptalk) today, where the context was a std bilevel vs a timed bilevel, I made exactly that point, that timed bilevels
are used to address CAs and non-timed don't and also that timed models cost a lot more. Context counts

Cheers

Doug

Wulfman wrote:

-SWS wrote:Lastly, beware that message boards can be a "dial wingers" paradise. In general people love to help. And in general some helpful people simply don't know what it is they don't know---strange as that entirely lacking type of self assessment sounds. Proceed with caution if the dial wingers decide to woo you.

Whatchu talkin' 'bout Willis?

When I read the part I bolded, I thought of this......

"Reports that say that something hasn't happened are always interesting to me, because as we know, there are known knowns; there are things we know we know. We also know there are known unknowns; that is to say we know there are some things we do not know. But there are also unknown unknowns -- the ones we don't know we don't know." - Donald Rumsfeld

Yes, proceed with caution.....don't be a "dial winger" unless/until "you KNOW what is is you don't know"....

Den

And when you don't know what you don't know, make sure that you don't do what you shouldn't do, because if you don't know what you shouldn't do, then you shouldn't do what you don't know . . .