5Groeben H, Schafer B. Pavlakovic, et al . Lung function under high segmental thoracic epidural anesthesia with ropivacaine or biupivacaine in patients with severe obstructive pulmonary disease undergoing breast sugery . Anesthesiology ,2002,96:536 - 541.
6Fleisher LA, Andersun GF. Perioperative risk:how can we study the influence of provide r characteristics .9 Anesthesiology , 2003,9(6):1039 - 1041.
7Kimo K, Friberg P, Grzegorezyk A, et al . Thoracic epidural anesthesia dural coronary artery bypass surgery:effects on cardiac sympathetic activity, myocardial blood flow and metablism and control hemodynamics. Anesth Analy,1994,18(79) :1075 - 1081.
8Weissman G. The metabolic response to stress: An overview and update . Anesthesiology, 1990,73:308 - 327.
9Klen SM, Bergh A, Steele SM. Thoracic paravertebral block for breast surgery . Anesth Analg, 2000,90:1402- 1405.
10Yeager MP, Glass DD, Neff RK, et al. Epidural anesthesia and analgesia in high -risk surgical patient. Anesthesiology, 1987,66 : 729 - 736.
