Fig. 4. Time course of extravascular lung water indexed to the body weight (EVLWI) (  A ) and EVLWI to intrathoracic blood volume indexed to the body weight (ITBVI) ratio (  B ) in conventional ventilation group (  gray bars ) and protective ventilation group (  white bars ) at baseline (T^Baseline), 1 h postoperatively (T^{Postop 1}), and 18 h postoperatively (T^{Postop 18}). Data are expressed as mean and SD. *  P < 0.01  versus T^Baseline. ANOVA = analysis of variance.