6Scheller M,Bufler J,Hertle I,et al.Ketamine blocks currents through mammalian nicotinic acetylcholine receptor channels by interaction with both the open and the closed state[J].Anesth Analg,1996,83(4):830-836.
7Adriaenssens G, Vermeyen KM, Hoffmann VL, et al. Postoperative analgesia with i. v. patient-controlled morphine : effect of adding ketamine. Br J Anaesth, 1999,83 :393-396.
8Edwards ND, Fletcher A,Cole JR, et al. Combined infusions of morphine and ketamine for postoperative pain in elderly patients. Anaesthesia, 1993,48 : 124-127.
9Mao J, Price DD, Mayer DJ. Mechanisms of hyperalgesia and morphine tolerance: a current view of their possible interactions. Pain, 1995,62:259-274.
10Sethna NF, Liu M, Gracely R, et al. Analgesic and cognitive effect of intravenous ketamine-alfentanil combinations versus either drug alone after intradermal capsaicin in normal subjects. Anesth Analg, 1998,86 : 1250-1256.