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Regional ventilation delay (RVD) analyses, color-coded RVD maps and RVDI values (in % inflation time) obtained by electrical impedance tomography (EIT) during a slow inflation with tidal volumes of 12, 9, 7.5, and 6 mL/kg at PEEP levels of 0, 5, 10, 15, 20, and 25 cmH2O.
