Research of Postoperative Residual Curarization of Rocuronium: A Comparison with Vecuronium and Atracurium<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /> 孟冬祥* 周书元* 陈雪华# 赵诗斌* 王 远# 李爱青# 贾乃光* 中日友好医院 麻醉科,北京 100029 北京潞河医院 麻醉科,北京 101100 Dong-xiang Meng*, Shu-yuan Zhou*, Xue-hua Chen#, Shi-bin Zhao*, Yuan Wang#,Ai-qing Li#, Nai-guang Jia *Department of Anesthesiology, China-Japan Frienfship Hospital, Beijing 100029,China # Department of Anesthesiology, Beijing Luhe Hospital, Beijing 101100,China ABSTRACT Objective:To compare the postoperative residual curarization (PORC) of rocuronium (ROC), vecuronium (VEC) and atracurium (ATR). Methods:60 ASA I-II patients for elective surgery were randomly allocated into ROC, VEC or ATR group, respectively. All patients received a combined anesthesia with propofol, fentainyl, isoflurane and N2O. The 2×ED95 of rocuronium (600mg•kg-1, ROC group), vecuronium (120mg•kg-1, VEC group) or atracurium (500mg•kg-1, ATR group) was given during anesthesia induction (20 in each group). Neuromuscular blockade was continuously evaluated with train-of-four stimuli (TOF) during operation. As TOF rate (TOFR) reached 0.1, the 1×ED95 muscle relaxant was added. Anesthetists were blind to the muscle relaxants. After operation, the patient recovered spontaneously. Tracheal extubation trigger was defined as that patient was able to open his/her eyes and to raise his/her arm and head for 5s. Results:Effect duration of last dose of vecuronium(106.4±20.1min)was longer than that of rocuronium(82.6±8.5min, p<0.01)and atracurium(85.1±10.9min, p<0.05). The TOFR at the time of tracheal extubation in VEC, ROC and ATR groups were 0.60±0.17, 0.61±0.09 and 0.66±0.11(p>0.05), respectively. The duration of residual neuromuscular blockade of atracurium (15.0±9.5min) was shorter than vecuronium (24.4±11.0min, p<0.01) and rocuronium (21.6±14.2min, p<0.05). Conclusions:All three kinds of non-depolarizing muscle relaxant have the risk of PORC after tracheal extubation under the guidance of clinical judgment. Key words:Anesthesia; Neuromuscular blocking agents, vecuronium, rocuronium and atracurium; Neuromuscular blockage Corresponding author:Dong-xiao Meng,MD; E-mail: dxmeng@yahoo.com.cn |