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Fig. 1 | Annals of Intensive Care

Fig. 1

From: Validation of the flow index to detect low inspiratory effort during pressure support ventilation

Fig. 1

Schematic show of flow index measurement. Flow–time waveform (grey circle, 100 Hz) for a single breath under pressure support ventilation is shown. The starting point of flow–time fitting was defined as the flow increased less than 1% of the preceding measurement, and the ending point was identified as the flow decreased more than 10% of the former measurement. The equation of fitting is also shown. The solid black line indicates the flow–time fitting curve (R2 = 0.997 and 0.994). The flow index was 1.3 and 3.1 in panel A and panel B, respectively

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