[Anesthesia-analgesia with remifentanil. Instrumental, laboratory and clinical evaluations]

The option of analgesic anaesthesia without hypnotic was investigated in 13 patients, submitted to general, orthopedic or urologic surgery. Induction and maintenance of anaesthesia was performed with syringe-pump infusion of remifentanil 1-->2.2 mcg/kg/m and cisatrecurium, 0.2/air with FIO2 0.3; ecg monitoring, sieric level of ACTH were studied. "Slipping 8 channels patterns" were observed without spindless and K complexes; only in 2 patients N2O 50% can be used for increasing the depth of narcosys; ACTH levels increases only after remifentanil infusion stop.