Keywords Intravenous Regional Anesthesia;Rat;Amitriptyline;Bupivacaine;Lidocaine;Median Effective Concentration;Aanesthetic effect;Local Toxicity;

• 静脉局部麻醉;大鼠;阿米替林;利多卡因;布比卡因;半数有效浓度;麻醉作用;局部毒性;