1. Relationship between the recruited volume and the arithmetic mean of the ratios of lung density at PEEP 15 cm H2O to lung density at PEEP 5 cm H2O (μP15/P5) over all regions of interest.
Relationship between the recruited volume and the arithmetic mean of the ratios of lung density at PEEP 15 cm H2O to lung density at PEEP 5 cm H2O (μP15/P5) over all regions of interest. The solid line is the regression line across the data points. The horizontal dotted line indicates the threshold to define recruiters (recruited volume above 150 mL). The vertical dashed line is drawn from μP15/P5 equal to 1, indicating no change in lung density with the higher PEEP.
Florent Wallet et al. Respir Care 2013;58:
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