Comparison of anesthetic procedures between the two groups during the induction phase.

Data are presented as means± SD; or number (%).Closed-loop = automated control of propofol infusion group guided by the bispectral index; Opened-loop = manual control infusion group guided by the bispectral index; The induction time = the time from the infusion of propofol and remifentanil to a BIS maintained at 10% lasting at least one minute.Comparison of anesthetic procedures between the two groups during the induction phase.