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Fig. 1 | Annals of Intensive Care

Fig. 1

From: Driving pressure during proportional assist ventilation: an observational study

Fig. 1

Upper panel: Identification of periods of sustained high ΔP: representative plot from one patient, generated via an R-Shiny application built for this purpose, showing the driving pressure (ΔP) time-series signal, raw data in green, and smoothen signal in blue (marked with thick blue arrow). The thick horizontal gray arrow indicates the period of sustained high ΔP ≥ 15 cmH2O. In x-axis is time in hours from initiation of recording. Lower panel: Identification of periods of stable compliance: representative plot of one patient showing compliance over time (x-axis showing time in seconds from initiation of recording). In the first step of this analysis, the slope change points (gray arrows) are identified, in the second step, the slope of each segment is calculated (segments numbered here from 1 to 15), and in the third step, periods with slope between − 0.001 and 0.001 are selected as periods of stable compliance (in this case periods 6 and 9 shown with blue arrows)

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