Objective To analyze clinical efficacy of different doses of dexmedetomidine on shivering and agitation of laparoscopic patients with given anesthesia. Methods 60 cases of laparoscopic patients from March 2015 to February 2016 were divided into into group A, B, C, D according to random number table method, 15 cases in each group. Before induction of anesthesia, groups A, B, C were given dexmedetomidine infusion of 0. 5 μg/kg, 0. 75 μg/kg, 1. 0 μg/kg, group D received isovolumetric saline infusion. The occurrence rates of agitation and shivering were compared between the 4 groups. Results The incidence rates of agitation after general anesthesia in groups A, B, C were 26. 67%, 6. 67%, 20. 00%, which were all significantly lower than 53. 33% in group D, and group B ( 6. 67%) was significantly lower than group A ( 26. 67%) ( P < 0. 05 ) . The incidence rates of shivering after general anesthesia in groups A, B, C were 40. 00%, 73. 33%, 46. 67%, which were all significantly higher than 26. 67% in group D, and group B had the most significant preventive efficacy on shivering with statistically significant difference ( P < 0. 05 ) . Conclusion Dexmedetomidine has good good clinical efficacy on preventing agitation and shivering in laparoscopic patients with general anesthesia, and the dose of 0. 75 μg/kg of dexmedetomidine has the best preventive effect with good recovery.%目的：探讨腹腔镜患者采用不同剂量右美托咪定预防全身麻醉(简称全麻)苏醒期躁动及寒战的临床疗效。方法将2015年3月至2016年2月收治的60例腹腔镜患者采用随机数字表法分成A，B，C，D 4组，各15例；A，B，C组在麻醉诱导前均给予右美托咪定泵注，给予剂量分别为0.5，0.75，1.0μg/kg，D组给予等容生理盐水泵注。比较4组患者术后全麻苏醒期躁动及寒颤的发生情况。结果 A，B，C 3组患者全麻苏醒期躁动发生率（26.67%，6.67%，20.00%）均明显低于D组（53.33%），B组患者躁动发生率（6.67%）明显低于A组（26.67%），差异有统计学意义（ P＜0.05）。A，B，C 3组患者全麻苏醒期寒战分级为0级的比例（40.00%，73.33%，46.67%）明显高于D组（26.67%），B组寒战预防效果最显著，差异有统计学意义（ P＜0.05）。结论右美托咪定在腹腔镜患者全麻苏醒期躁动及寒战发生方面的临床疗效良好，其中剂量为0.75μg/kg的右美托咪定预防效果最佳，术后恢复良好。
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