Figure 2From: Spatial distribution of sequential ventilation during mechanical ventilation of the uninjured lung: an argument for cyclical airway collapse and expansion Composite log ratios of regional ventilation. Box plots of composite log ratio ventilation (log V12/V6) data for all pieces from all five animals, divided by lung region. A) 0 cmH2O PEEP; B) 8 cmH2O.Back to article page