Fig. 3. Changes of oropharyngeal leak pressure between both i-gel (□) and SLMA (■) groups at various points. Data are represented as the mean ± SD. ^*P < 0.01 compared with TO1 in each group. TO1: 1 min after induction, TO2: 5 min after start of CO₂ pneumoperitoneum and TO3: 5 min after removal of pneumoperitoneum.