Fig. 1.

Individualized positive end-expiratory airway pressure titration using electrical impedance tomography in one patient of the EIT group. Optimal PEEP is defined the intercept point of cumulated collapse and overdistension percentage curves, providing the best compromise between collapsed and overdistended lung. If the intercept point occurred between two PEEP steps, the selected PEEP corresponded to the PEEP step toward the lowest global inhomogeneity index. For the presented example, selected PEEP is 6cmH₂O