Noninvasive ventilation is usually applied in pressure support mode. Unintentional leaks and upper airway obstruction are particularities of noninvasive ventilation that can be detected on the flow curve. Unintentional leaks are a common cause of patient-ventilator asynchrony occurring both at the beginning and the end of inspiration. Flow waveform observation helps to optimize the synchronization settings.
NIV in PS (AVI 290325 kb)
Autotrigger in NIV (AVI 186641 kb)
Ineffective inspiratory effort in NIV (AVI 313367 kb)