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Fig. 2 | Critical Care

Fig. 2

From: Changes in shunt, ventilation/perfusion mismatch, and lung aeration with PEEP in patients with ARDS: a prospective single-arm interventional study

Fig. 2

Data analysis example. Patient example of measured data and results of data analysis describing gas exchange and lung aeration. a Input data for calculating shunt and V/Q mismatch parameters. Left subplot shows measured FETO2 versus SpO2 (+) and SaO2 at low (▽) and high (△) PEEP along with curves illustrating model-fitted simulations at low (solid curve) and high (dashed curve) PEEP. Right subplot shows measured FETCO2 versus simulated PaCO2 (○) and measured PaCO2 at low (▽) and high (△) PEEP. b CT scans taken at 5, 20, and 45 cmH2O. c Resulting gas exchange model parameters from the model fit to the measured data illustrated in a. d Resulting CT HU frequency distributions from CT scans illustrated in b for PEEP 5 (solid line), 20 (dashed line), and 45 (dotted line) cmH2O

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Critical Care

ISSN: 1364-8535