<prompt> APRV stands for:Adult pressure release ventilationAirway pressure release ventilationAir pressure reverse ventilationAirway pressure reduction ventilation  <response>: APRV - Airway Pressure Release Ventilation Mode of mechanical ventilation that is less common than pressure control or volume control, APRV was described initially by Stock and Downs in 1987 as a continuous positive airway pressure CPAP with an intermittent release phase. APRV applies CPAP P high for a prolonged time T high to maintain adequate lung volume and alveolar recruitment, with a time-cycled release phase to a lower set of pressure P low for a sho period of time T low or release time where most of ventilation and CO2 removal occurs Using high-flow demand valve CPAP circuit, unrestricted spontaneous breathing can be integrated and can happen any time regardless of the ventilator cycle. If the patient has no spontaneous respiratory effo, APRV becomes typical to inverse ratio pressure-limited, time cycle-assisted mechanical ventilation pressure-controlled ventilation. 