Shibata, Yasuyuki [Intraoperative autonomic nervous activities and postoperative analgesia when general anesthesia was applied using an opioid combination]. [electronic resource] - Masui. The Japanese journal of anesthesiology Dec 2004 - S138-44 p. digital Publication Type: Clinical Trial; Comparative Study; Journal Article; Randomized Controlled Trial ISSN: 0021-4892 Subjects--Topical Terms: AdultAgedAnalgesics, Opioid--administration & dosageAnesthesia, General--methodsAnesthetics, Inhalation--administration & dosageAutonomic Nervous System--drug effectsFentanyl--administration & dosageHumansMethyl Ethers--administration & dosageMiddle AgedPain, Postoperative--drug therapySevoflurane