Patient Ventilator Asynchrony

Abstract

Patient-ventilator asynchrony leads to unnecessary imposed muscle loading which may lead to unnecessary administration of sedation and a longer duration of mechanical ventilation (MV), weaning time and intensive care unit (ICU) stay. When the timing of patient’s breath and ventilator are out of phase, ineffective inspiratory triggering (inspiratory-trigger asynchrony) or ineffective termination of the mechanical breath (expiratory-trigger asynchrony) can occur.