Fig. 2
From: Comparative bench study evaluation of different infant interfaces for non-invasive ventilation
Example from a real patient tracing (from our database) of patient-ventilator interaction measurements during NIV. From the top to the bottom: Flow (V′), Airway pressure (Paw) and Esophageal pressure (Pes). Delaytrinsp: between the first dotted line and the first black line is the delay between the onset of patient inspiration and the start of the mechanical assistance. Delaytrexp: between the second dotted line and the second black line is the delay between the end of patient inspiration and the end of the mechanical insufflation. Timesync: between the first black line and the second dotted line is the time during which the patient and the ventilator are in phase