Fig. 2

Anesthesia records. × : Start and end of anesthesia. ◎: Start and end of surgery. T: Tracheal intubation with McGrath™ MAC laryngoscope. 1: Insertion of iGel#4. 2: Insertion of nasogastric tube and suction. 3: Right thoracic cavity drainage. 4: Left thoracic cavity drainage. 5: Detection of bladder perforation. 6: Open abdominal drainage. HR (green line): Heart rate (Beat per minutes). ABP (M) (red line): Mean arterial pressure (mmHg). SpO₂ (deep blue line): oxygen saturation measured by pulse oximeter. Peak airway pressure (light blue line) (cmH2O). Dynamic lung compliance (purple line) (ml/cmH₂O). PEEP (orange line): positive end expiratory pressure (cmH₂O)