We compared 2-hour CENPV using a tank respirator with 2-hour CPPV using biphasic positive airway pressure/airway pressure release ventilation with an Evita 1 ventilator (Dräger, Lübeck, Germany).
NMH holds patents on a method of initiating, managing, and/or weaning airway pressure release ventilation, as well as controlling a ventilator in accordance with the same, but these patents are not commercialized, licensed, nor royalty-producing.
Spontaneous breathing in any phase of the mechanical ventilator cycle is possible during airway pressure release ventilation (APRV), a technique that provides ventilatory support by time-cycled switching between two continuous positive airway pressure levels [ 1- 3].
Spontaneous breathing in any phase of the mechanical ventilator cycle is possible during airway pressure release ventilation, a ventilation mode that periodically switches between two levels of continuous positive airway pressure [ 67].
Discussions of advanced ventilator management including lung protective strategies, airway pressure release ventilation, and pressure control inverse ratio ventilation will be useful to the advanced critical care practitioner.
A PubMed search of the terms "Airway Pressure Release Ventilation", "APRV", "Bi-Vent", "APRV/Biphasic" and "Bi-Level" and "Mechanical Ventilation" OR "Ventilator" was conducted alone or in combination.
We mostly used airway pressure release ventilation (APRV) and biphasic positive airway pressure (BIPAP) modes on a Dräger Evita XL mechanical ventilator and frequently applied lung recruitment with the positive end-expiratory pressure (PEEP) technique monitored by ultrasound.
Airway pressure release ventilation (APRV) is as a pressure preset mode that allows unrestricted spontaneous breathing throughout the entire ventilator cycle.
Spontaneous breathing with airway pressure release ventilation countered the undesirable cyclic alveolar collapse in dependent lung regions, which can contribute to ventilator-associated lung injury, but no indices of lung injury were assessed.
Before starting the protocol, the mechanical ventilation in volume-controlled mode was switched to airway pressure release ventilation (APRV), with settings adjusted to achieve the same minute ventilation, which allows for external control of the ventilator (Evita 4, Dräger AG, Lübeck, Germany).
