Effect of Low-Flow Anesthesia in Single Lung Ventilation on Postoperative Respiratory Complications

"During anesthesia administration:~T0, T1, T2, T3, T4 represent the following periods:~T0: Double lumen ventilation in the supine position immediately after intubation T1: Double lumen ventilation in the lateral position T2: Single lumen ventilation in the lateral position (with the chest wall closed) T3: Single lumen ventilation in the lateral position (with the chest wall open) T4: Just before extubation~1. Airway pressure (P plateau, Ppeak) values from the anesthesia device data,~2. BIS (from routine BIS monitoring)~3. Temperature (Routinely from pharyngeal temperature probe),~4. Oxygen saturation (Routinely from the patient monitor)~5. End-tidal CO₂,~6. Inspiratory O₂ concentration,~7. Inspiratory CO2 concentration,~8. Inspiratory and expiratory desflurane/sevoflurane concentrations,~9. Tidal volume,~10. MAC, routinely from anesthesia device data~11. Blood Gas Analysis (COHgb, Ph, PO 2 , PCO 2 , SaO 2, HCO 3 , Base deficit, glucose, lactate)"