Reg Anesth Pain Med:局麻药注射速度对周围神经阻滞持续时间的影响

2019-01-30 anesthGH “罂粟花”公众号

局麻药注射速度范围在12~1800ml/h之间变化时,局麻药不会影响腓总神经阻滞的时间。

背景与目的

局麻药(LA)应用于外周神经局部麻醉时,其注射速度的范围可从缓慢持续输注(3~12 ml/h)到快速手动注射(>7500ml/h)变化。适宜的注射速度有利于局麻药向目标神经的扩散,并影响神经阻滞的变化过程。本研究旨在探讨局麻药的单次注射速度差异是否会影响周围神经阻滞的持续时间。

方  法

本研究共纳入60例健康成人志愿者。使用超声引导置管技术进行腓总神经周围导管留置术。采用随机双盲法进行分组研究。据双盲原则,受试者随机接受0.2%的罗哌卡因4ml,注射速度为12ml/h、60ml/h、300ml/h、600ml/h或1800ml/h其中之一。主要指标为感觉神经阻滞(对低温感知不明显)的持续时间。次要指标为运动神经阻滞的持续时间、感觉神经阻滞的开始时间以及感觉与运动神经阻滞的程度。组间差异使用单因素方差分析比较。

结  果

局麻药物注射速度不同的5组患者(12ml/h、60ml/h、300ml/h、600ml/h或1800ml/h)之间感觉阻滞持续时间无统计学差异(P=0.294)。运动神经阻滞的持续时间、感觉神经阻滞的开始时间和感觉和运动神经阻滞的程度也均无统计学意义。

结  论

局麻药注射速度范围在12~1800ml/h之间变化时,局麻药不会影响腓总神经阻滞的时间。

原始出处:

Madsen M H, Christiansen C B, Rothe C, et al. Local Anesthetic Injection Speed and Common Peroneal Nerve Block Duration: A Randomized Controlled Trial in Healthy Volunteers.[J]. Reg Anesth Pain Med, 2018, online first:1.

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    2019-01-31 zhwj
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