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Figure 2 | Critical Care

Figure 2

From: Neurally adjusted ventilatory assist and proportional assist ventilation both improve patient-ventilator interaction

Figure 2

Impact of ventilator mode and level of assistance on the major descriptors of breathing pattern and diaphragmatic electrical activity (EAdi). Pressure support ventilation (PSV)100, neurally adjusted ventilatory assist (NAVA)100, and proportional assist ventilation (PAV)100 are medium levels of assistance set to obtain a tidal volume (VT) between 6 and 8 ml/kg ideal body weight. PSV50, NAVA50 and PAV50 are low levels of assistance defined by decreasing the assistance level by 50% in each condition. Inversely, PSV150, NAVA150, and PAV150 are defined by increasing the assistance level by 50% in each condition. EAdimax, peak of EAdi; RR, respiratory rate; VT/Eadimax, neuromechanical coupling. *P <0.05 with PSV. Data are expressed as median and interquartile range.

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