超声引导相同低剂量不同浓度罗哌卡因用于臂丛神经阻滞的临床观察

目的 观察相同低剂量(100 mg)不同浓度罗哌卡因用于超声引导臂丛神经阻滞的临床效果.方法 选择2015年3—9月行上肢手术的患者90例,分为A、B、C组,每组30例.A组予0.375%罗哌卡因30 ml,B组予0.5%罗哌卡因22.5 ml,C组予0.75%罗哌卡因15 ml.观察3组麻醉效果及并发症发生情况.结果 B、C组感觉阻滞起效时间、镇痛维持时间均短于A组,阻滞节段总数少于A组(P<0.05);C组运动阻滞恢复时间均短于A、B组(P<0.05);3组均未发生严重并发症.结论 小剂量罗哌卡因于超声引导臂丛神经阻滞效果较好,但容量增加可能致并发症发生率增加.

Clinical Observation on Ultrasound-guided Brachial Plexus Block with Equally Small Doses and Different Con-centrations of Ropivacaine

Objective To observe the clinical effect of ultrasound-guided brachial plexus block with equally small doses (100 mg) and different concentrations of Ropivacaine. Methods A total of 90 patients undergoing upper limb surgery from March to September 2015 were randomly divided into group A, B and C (n=30 for each group). Group A, B and C were treated with 0. 375% (30 ml), 0. 5% (22. 5 ml) and 0. 75% (15 ml) of Ropivacaine respec-tively. The anesthesia effect and incidence rates of complications were observed in the three groups. Results The onset time of sensory block and the duration of holding analgesia in group B and C were shorter than those in group A, and the total numbers of the blockage nerve segments were less than that in group A ( P<0. 05 ) . The recovery time of motor block in group C was shorter than those in group A and B (P<0. 05). No serious complications was found in the three groups (P>0. 05). Conclusion Ultrasound-guided brachial plexus block with small doses of Ropivacaine may achieve satisfactory block effect, but the incidence rate of complications may increase with the increasing volume.