Measurements
BLOOD, SECONDARY, OXIDATIVE STRESS
The primary outcome was PaO2/FiO2 in our study, the secondary endpoints included (1) variables of lung function and oxidative stress: Qs/Qt, respiratory index (RI), A-aDO2, MDA and SOD; (2) other relevant clinical parameters: MAP, HR, Hb, pH, PaCO2, removal time of thoracic drainage tube, duration of ICU stay, length of postoperative hospitalization, the Quality of Recovery-15 (QoR-15) score [Blood gas analysis was performed in all patients before one-lung ventilation (T0), 30 min after one-lung ventilation (T1), 1 h after one-lung ventilation (T2), and 10 min after resuming two-lung ventilation (T3) to calculate PaOThe following equations were used to calculate these parameters:
whereby PA-aDO
PA-aDO