On the morning of surgery, patients will be randomly allocated to one of the two following groups : target concentration-delivered propofol-remifentanil versus sufentanil-sevoflurane. The primary judgement criterion will be the rapidity of awakening, defined as the time between the cessation of administration of the last anesthetic until extubation. Several secondary judgement criteria related to quality of postoperative recovery and complications will be collected. The hypothesis tested is a 30% reduction of the time necessary to extubate patients after cessation of anesthetic delivery in the propofol-remifentanil group. Based on previous works, using an risk of 20 % and an of 5 %, 100 patients must be included in this study (50 or each group). Statistical analysis will be performed by WILCOXON MANN, WHITNEY and X2 tests based on the type of variables.