Fig. 2. Changes of heart rate and blood pressure between the i-gel group (○) and the SLMA group (●). Values are mean ± SD. There was no significant difference in heart rate and blood pressure between the groups. T0: baseline, T1: 1 min after induction, T2: 5 min before CO₂ pneumoperitoneum, T3: 5 min after start of CO₂ pneumoperitoneum, T4: 5 min before removal of pneumoperitoneum, T5: 5 min after removal of pneumoperitoneum.