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 Volume Assured Pressure Support (VAPS) Pulmonary & Sleep Center of the Valley ResMed's non invasive ventilators suitable for COPD A ventilator mode is a method of mechanical ventilation that determines how the ventilator supports a patient's breathing. It specifies the conditions under which the ventilator delivers breaths, including whether the machine New modes of ventilation ScienceDirect