Fig. 5. Average lung density histograms of tidal changes in computed tomography of lung compartments in patients who during the acute respiratory distress syndrome network ( ARDSNet ) strategy had 28 ≤ PPLAT≤ 30 cm H2O are shown at study entry ( A, left ) and after 72 h of Lower ARDSNet /Carbon Dioxide Removal strategy ( A, right ). Same data for the patients who during the ARDSNet strategy had 25 < PPLAT< 28 cm H2O are shown at study entry ( B, left ) and after further 72 h of conventional ARDSNet strategy ( B, right ).