摘要目的 评价不同浓度的甲磺酸罗哌卡因复合舒芬太尼在连续肌间沟臂丛神经阻滞术后镇痛的效果和安全性.方法 连续肌间沟臂丛神经阻滞麻醉下上肢手术90例,术后随机分成A、B、C三组:A组0.158％甲磺酸罗哌卡因+0.5μg/ml舒芬太尼；B组0.238％甲磺酸罗哌卡因+0.5μg/ml舒芬太尼；C组0.238％甲磺酸罗哌卡因.手术结束前20 min接自控镇痛泵,输注速率0.05ml/(kg·h),PCA 1 ml,锁定时间15 min.记录术后4、8、16、32、48 h的疼痛视觉模拟评分(VAS)、Ramesay镇静评分、术后运动神经阻滞恢复评分(改良Bromage分级)及PCA使用的次数和不良反应的发生率.结果 三组在术后4、8、16、32、48 h各时间点均取得良好的镇痛效果(VAS 1.58 ±9;1.90±0.8；1.62±0.6；1.59±0.7；1.53±0.7)(P＞0.05)；三组间Ramesay评分、改良Bromage评分、肢体麻木不适、恶心、呕吐、嗜睡、皮肤瘙痒及呼吸抑制等不良反应差异亦无统计学意义(P＞0.05),但A组PCA使用的次数明显多于B、C两组(P＜0.05).结论 甲磺酸罗哌卡因在低浓度(0.158％～0.238％)时,舒芬太尼能够明显的增强镇痛效果,但在浓度达0.238％时单纯甲磺酸罗哌卡因与甲磺酸罗哌卡因复合舒芬太尼却具有相似的镇痛效果和安全性.

abstractsObjective To evaluate the efficacy and safety of postoperative analgesia in continuous Interscalene brachial plexus block by different strength ropivacaine mesylate combined with sufentanil.Methods Ninety cases of upper limb surgery in continuous peripheral nerve block (CPNB) were selected.The patients after the operation were divided randomly into three groups (A,B,and C):A group was treated with 0.158％ ropivacaine mesylate + 0.5 μg/ml sufentanil,B group with 0.238％ ropivacaine mesylate + 0.5 μg/ml sufentanil,and C group with 0.238％ ropivacaine mesylate.20 minutes before the end of surgery,controlled analgesia device was connected with infusion rate 0.05 ml/(kg · h),PCA 1 ml,and lock time 15 min.The pain visual analog score (VAS),Ramesay sedation score,and postoperative motor nerve block recovery ratings (modified Bromage classification) were recorded at the 4,8,16,32,48 h time point postoperatively.The times of using PCA and the frequency of the adverse reaction were also recorded.Results Three groups all got good analgesic effect at 4,8,16,32,48 h time point postoperatively (VAS 1.58 ± 9 ; 1.90 ± 0.8 ; 1.62 ± 0.6 ; 1.59 ± 0.7 ; 1.53 ± 0.7) (P ＞ 0.05) ; There were no significant difference among the three groups in Ramesay score,modified Bromage score,limb discomfort,nausea,vomiting,lethargy,pruritus and respiratory depression (P ＞ 0.05),but the time of using PCA in A group were significantly more than that in B or C group (P ＜ 0.05).Conclusions Sufentanil can enhance the analgesic effect significantly when the ropivacaine mesylate is in low concentrations (0.158％ ～0.238％),but when the ropivacaine mesylate concentration get up 0.238％,there will be similar analgesic efficacy and safety between ropivacaine mesylate only and ropivacaine mesylate combined with sufentanil.