Figure 1 from Initiation of Noninvasive Ventilation for Sleep Related Hypoventilation Disorders: Advanced Modes and Devices Semantic Scholar Synchronized Intermittent Mandatory Ventilation (ventilator support) MD Searchlight Volume Assured Pressure Support (VAPS) Pulmonary & Sleep Center of the Valley 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 Resmed VPAP ST with iVAPS ResMed authorized distributor and Service Centre in Hong Kong Non Invasive Ventilation (NIV): What It Is, Types, Benefits & Uses