The ventilator is agnostic to autopeep unless you ask it to hold flow in expiration and transduce a pressure otherwise you're unable to guesstimate how much autopeep there is. The volume Newer modes of ventilation PPTX APRV can feel complex, but its core idea is simple. And APRV is explained as CPAP with a release phase. That release phase is where the real advantage comes from. In this A Simple Guide to Ventilator Modes and Their Uses