Figure 1
From: Noninvasive ventilation and the upper airway: should we pay more attention?
Screenshots from a ventilator in noninvasive ventilation pressure support mode. Tracings from top to bottom: airway pressure (Paw), airway flow (V’), tidal volume (V), and diaphragm electrical activity (Edi). Different types of patient ventilator asynchrony and dyssynchrony are shown: double triggering, early cycling off, trigger delay, wasted efforts and auto triggering [18, 19].