Anesthesia Feasibility Study With the CONCERT-CL® Station

This is a feasibility study of anesthesia in closed loop with the CONCERT-CL® station, on the effect of the hypnotic agent, measured by the bispectral index of the electroencephalogram, to maintain the hypnosis level within the recommended limits for general anesthesia. The analgesic agent is administered in "Target-Controlled Infusion = TCI" and analgesia evaluated by pupillometry. This is a prospective, open, non-controlled, non-randomized, monocentric study. The main objective is to study the potential contribution of the system in the conduct of anaesthesia, as decision support, for the administration of the hypnotic agent. Secondary objectives will include hemodynamic stability, and the average concentrations of opioid and hypnotic anesthetic agents evaluated from the pharmacokinetic model. The study will involve surgical patients scheduled for surgery under general anesthesia for more than 1 (one) hour.