You're correct about that, Dori.DoriC wrote:It's my understanding that the EPR lowers the pressure by 1-3 cms accordingly.
It doesn't. The amount of drop A-Flex and C-Flex give, no matter what either of them is set at, is very dependent on how forcefully a person breathes out. The more forceful the exhalation is, the more drop there will be with those. The lighter the exhalation, the less drop and the sooner the regular pressure comes back in. A-Flex/C-Flex are supposed to let the regular pressure back in before the exhalation is finished.DoriC wrote:I'm not sure if the Aflex works the same
EPR keeps the pressure down the exact number of cms (1, 2, or 3 cms) throughout the entire exhalation and during the pause after the exhalation is finished. When the person actually starts to breathe in again, the regular pressure happens.
Since there's a chance that the lower EPR pressure might have allowed the throat to collapse at the end of the exhalation, and a person might not be able to start to breathe in again in a timely manner, there's a safeguard built into EPR. If so many seconds go by and the person has not started to inhale again, EPR is suspended and the regular pressure comes back. When normal breathing has been resumed, EPR resumes doing its thing.
I personally prefer to set my "prescribed" pressure, whether it be for CPAP or as the minimum pressure setting on an autopap, at least a cm or two higher if I'm using EPR.




