robysue wrote:palerider wrote:
however, while EPR uses the easy-breath waveform in medium mode, I don't believe it's right to say that easy-breath is the same, or part of EPR,
I never said that they were the same, nor did I say that Easy Breathing is a part of EPR.
no, you didn't say that but the post that I was responding to originally DID say, or at least imply, that they were the same. that is what I initially addressed, and referenced.
robysue wrote:As you can see, the VPAP's Easy Breathing pressure curve has the same rough wave structure that the EPR+Easy Breathing curve has.
But there are some subtle differences. The EPR+Easy Breathing curve is a bit smoother than the Easy Breathing curve on the VPAP. And by looking at the parts of the two curves marked by the red lines, we can see that the VPAP's Easy Breathing algorithm starts to increase the pressure just a wee bit later than the EPR+Easy Breathing curve does.
Here's some actual measured data, as opposed to marketing drawings:
Autoset w 12cm, epr3
vpap auto 12/9
I agree, they *ARE* very similar, in fact, I have trouble telling them apart.
robysue wrote:Those red lines represent the part of the pressure curve that corresponds to the flat part of the flow rate curve that represents a brief pause between the exhalation and the inhalation. And -SWS's post was in response to a long set of posts between me, -SWS, and others concerning whether the S9 AutoSet with EPR+EasyBreathing was really and truly the same as a "real" bilevel. My throat at the time said NO, it could tell a difference: Bilevels waited until my inhalation started to increase the pressure, and on my S9 Autoset the pressure started to very subtly increase while I was still exhaling and I found that the small increase in pressure would tickle my throat and make me feel as though the S9 were trying to make me inhale before I was ready to inhale.
perhaps the biggest difference between EPR and vpap s/st/vauto is that you can change the how sensitive it is to triggering the next breath, as well as cycling back to epap, the above charts were done with trigger and cycle set to defaults (medium) if I changed trigger to very high, it would initiate ipap sooner on the inhale curve, if I set it to very low, it would initiate it later on the inhale curve.
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I don't really understand what was happening to you, since EPR doesn't revert to ipap until you start to inhale. as shown earlier. unless something was wrong with the machine.
there may very well be the differences you experienced, my throat is not sensitive enough to notice that subtle a change normally, all I have to go on is the data traces.
if you'd like any other data images, let me know and I'll do my best to produce it.
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