Fig. 4.
Box plot (median with 25th and 75th percentiles) of nonaerated mass tissue on computed tomography after extubation. Gray boxes represent patients submitted to laparoscopic surgery, and white boxes represent patients submitted to open surgery. The positive end-expiratory pressure titrated by electrical impedance tomography (PEEP-EIT) arm had less atelectasis than PEEP4 arm after extubation. CT, computed tomography; PEEP4, PEEP of 4 cm H2O.