4Casati A, Santorsola R, A:degheri G, et al. Intraoperative epi-dural anesthesia and postoperative analgesia with levobupivacaine for major orthopedic surgery: a double blind, randomized cornpar-ison of racemic bupivacaine and ropivacaine. J Clin Anesth, 2003,15 : 126-131.
1Breslow MJ. The role of stress hormones in perioperative myocardial ischemia. Int Anesthesiol Clin, 1992, 30: 81-100.
2Breslow MJ,Parker SD,Frank SM,et al. Determinants of catecholamine and cortisol responses to lower extremity revascularization. Anesthesiology, 1993,79:1202-1209.
3Weissman C. The metabolic response to stress:an overview and update. Anesthesiology, 1990,73 : 308-327.
4[1]Meister GC,D Angelo R,Owen M,et al.A comparison of epidural analgesia with 0.125% ropivacaine vervus 0.125% bupivacaine with fentanyl during labor.Anesth Analg,2000,90:632-637.
5Casati A, Santorsola R, Aldegheri G, et al. Intraoperative epidural anesthesia and postoperative analgesia with levobupivaeaine for major orthopedic surgery : a double-blind,randomized comparison of raeemie bupivaeaine and ropivaeaine. J Clin Anesth,2003,15:126-131.
6Schug SA, Scott DA, Payne J, et al. Postoperative analgesia by continuous extradural infusion of ropivacaine after upper abdominal surgery. Br J Anaesth,1996,76:487-491.
7Steinberg RB, Liu SS, Wu CL, et al. Comparison of ropivacainefentanyl patient-controlled epidural analgesia with morphine intravenous patient-controlled analgesia for perioperative analgesia and recovery after open colon surgery. J Clin Anesth, 2002,14:571-577.
8Roden DM. Drug iduced prolongation of the QT interval. N Engl J Med, 2004,350 : 1013-1022.