Fig. 2.

These are changes of plateau pressure (Pplat) during laparoscopic assisted colectomy. Pplat during head-down position (D20, D10) is higher than in the neutral position. All parameters at PP 15 are higher than at PP 10. Plateau pressure after deflation of pneumoperitoneum (End) is higher than Pplat before insufflation (PI). PP 10: peritoneal pressure 10 mmHg, PP 15: peritoneal pressure 15 mmHg, D20: head-down 20°, D10: head-down 10°, U20: head-up 20, U10: head-up 10°. Values are express as mean ± SD. ^*P < 0.05 compared with neutral position, ^†P < 0.05 compared with PP 10, ^‡P < 0.05 compared with PI.