右美托咪定联合臂丛神经阻滞在上肢手术中的应用
2016-12-10闫芳魏磊吴学东赵建华
闫芳 魏磊 吴学东 赵建华


【摘要】目的 研究上肢手术臂丛神经阻滞联合应用右美托咪定的安全性及有效性。方法 择期臂丛神经阻滞下的上肢手术50例,ASA分级Ⅰ~Ⅱ级,体重40~72 kg,采用随机数字表法,将其分为2组(n=25):对照组(C组)和右美托咪定组(D组)。D组臂丛穿刺前15min静脉输注右美托咪定负荷剂量1.0μgkg-1,输注时间10min,随后持续静脉泵注0.5 μgkg-1h-1至术毕前30min;C组采用同样方法静脉输注等容量生理盐水。分别记录T0(入室)、T1(臂丛穿刺前)、T2(切皮)时和T3(手术结束时)的HR、MAP、SpO2、VAS评分和Ramsay评分。结果 与C组比较,D组患者T1~T3时HR明显减慢,MAP明显降低(P0.05);D组患者T1~T3的VAS评分明显降低(P0.05), Ramsay评分明显增加(P0.05),结论 右美托咪定可安全有效地应用于臂丛神经阻滞下上肢手术的辅助镇静。
【关键词】右美托咪定;臂丛神经阻滞;上肢
【Abstract】Objective To investigate the effects and safety of dexmedetomidine(Dex) combined branchial plexus block during upper limb operations.Methods Fifty ASA Ⅰ~Ⅱ patients weighing 40-72 kg scheduled for one side upper limb operation were randomly divided into 2 groups(n=25):control group(group C)and dexmedetomidine group (group D). D Dexmedetomidine 1.0μg·kg-1 was infused iv over 10 min before anesthesia induction ,and then was infused at a rate of 0.5 μg·kg-1·h-1 (group D) until 30 min berore the end of operation.Group C received the equal volume of normal saline. The HR,MAP,SpO2,VAS score, Ramsay score were recorded at the moment of in operation room(T0),before the brachial plexus puncture (T1),cutting skin (T2) and the end of operation (T3). Results Compared with group C MAP were decresed and HR were slower significantly in group D at T1 -T3.The scores of VAS in group D at T1 -T3were significantly lower than that in group C. The scores of Ramsay in group D at T1 -T3were significantly higher than that in group C.Conclusion Dexmedetomidine may effectively achieve assisted therapy in branchial plexus block analgesia for upper limb operation.
【Key words】Dexmedetomidine; Branchial plexus block ; upper limb
【中图分类号】R4 【文献标识码】B 【文章编号】1671-8801(2016)05-0030-03
上肢手术多采用臂丛神经阻滞的麻醉方法。臂丛神经阻滞操作简单,效果较好,但由于手术前存在骨折痛,患者多较紧张,且臂丛神经阻滞易出现阻滞不全,为了保证镇静的效果,术中多辅助芬太尼、咪达唑仑等经脉麻醉药,影响术后患者恢复,导致围术期风险增加[1]。右美托咪定可有效抑制手术应激状态下异常增高的血压和心率,产生剂量依赖性的镇静、镇痛及抗焦虑作用,且不引起呼吸抑制[2]。本研究应用右美托咪定在上肢手术患者中,研究其用于上肢手术的安全性及有效性。
一、资料与方法
1.1 一般资料 经本院医学伦理委员会批准,并签署患者知情同意书。2013年6月~2016年6月行择期上肢手术患者50例,ASA分级Ⅰ~Ⅱ级,体重40~78 kg。……
