Fig. 3.
Changes in lung density, weight, and volume of air of the nonperfused lung, before and after the inflation of the balloon of the pulmonary artery catheter. Baseline and wedge time values of the nonperfused area of the left lung regarding subregional density expressed in Hounsfield units (HU; A), subregional lung weight expressed in grams (B), and subregional volume of air expressed in ml (C). The mean baseline and wedge time end-expiratory values and corresponding P values are reported.