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Anesth Essays Res:下肢手术中蛛网膜下腔注射常规剂量不同浓度的低比重左旋布比卡因的对比研究

2017-11-13 周倩 罂粟花

背景与目的:低比重脊髓麻醉对于单侧下肢骨折是有利的,因为它可以消除躺下后由骨折肢体受压后导致的蛛网膜下腔阻滞而引起的疼痛。本研究比较了三种常规剂量不同浓度的低比重左布比卡因的阻滞特征和并发症,以确定选用左布比卡因的最佳浓度。

背景与目的:低比重脊髓麻醉对于单侧下肢骨折是有利的,因为它可以消除躺下后由骨折肢体受压后导致的蛛网膜下腔阻滞而引起的疼痛。本研究比较了三种常规剂量不同浓度的低比重左布比卡因的阻滞特征和并发症,以确定选用左布比卡因的最佳浓度。

方法:120美国麻醉医师学会:将纳入的18-65岁的单侧下肢手术患者分为三组,进行前瞻性群组研究。将0.4mL、0.6mL和0.8mL的蒸馏水分别加入ABC三组的2mL0.5%等比重的左布比卡因(10mg)溶液中,ABC三组得到的左布比卡因浓度分别为0.999294、0.998945和0.998806。通过针刺法和Bromage量表评估感觉和运动的阻滞情况,并记录痛觉缺失和并发症的总持续时间。利用平均值、标准误差、单因素方差分析和Bonferroni来分析定量变量;利用比例和卡方检验分析定性变量。

结果:从人口统计学参数、肢体运动阻滞和并发症几个方面进行比较。C组的感觉阻滞开始得最快(10.10分钟),痛觉缺失的持续时间最长(478.97分钟;P <0.001);但感觉水平较高(48.7%)。 B组的T10感觉水平为92.5%;感觉阻滞开始时间与C组相当(P = 0.248),痛觉缺失的持续时间合理(332.50分钟)。A组的感觉水平偏低,感觉阻滞开始得迟缓且很快消失。

结论:比起另外两组,B组(浓度:0.998945)有较好的阻滞特征。

原始出处:

Biji KP, Sunil M, Ramadas KT.Comparative Study of Constant Dose Intrathecal Hypobaric Levobupivacaine with Varying Baricities in Lower Limb Surgeries.Anesth Essays Res. 2017 Jul-Sep;11(3):642-646.

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