Suzuki, Manzo Determining the plasma concentration of ketamine that enhances epidural bupivacaine-and-morphine-induced analgesia. [electronic resource] - Anesthesia and analgesia Sep 2005 - 777-784 p. digital Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't ISSN: 0003-2999 Standard No.: 10.1213/01.ane.0000166952.12290.45 doi Subjects--Topical Terms: AdultAgedAnalgesics, OpioidAnesthesia, EpiduralAnesthetics, Dissociative--administration & dosageAnesthetics, LocalBupivacaineCough--complicationsDose-Response Relationship, DrugDouble-Blind MethodDrug SynergismFemaleHumansKetamine--administration & dosageMaleMiddle AgedMorphinePain--drug therapyPain MeasurementThoracic Surgery, Video-Assisted