Laparoscopic surgery: It is no necessary to change ventilator mode to improve ventilation conditions; a controlled trial.

Backgrounds/aims: The main objective of this study is to compare the ventilatory effects of AFVC and PC modes with the VC mode in laparoscopic surgery of the gall bladder.

Methods: Thirty-five patients programmed for laparoscopic cholecystectomy were included. Four times were defined for all patients.