Fig. 5.
Pathological chest x-ray was defined as the presence of at least one of the following: atelectasis, pleural effusions, or other chest radiological alterations in standard (red bar) and protective (blue bar) ventilation groups. * P < 0.05 versus standard ventilation group on days 1 and 3; within the same group +P < 0.05 versus preoperative period (day 0).