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目的为三角肌运动反应作为在外周神经刺激器定位下小儿经肌间沟臂丛神经阻滞终点的临床应用提供参考。方法60例拟行上肢手术患儿,在外周神经刺激器定位下行经肌间沟臂丛神经阻滞,随机分为3组:A组(20例),三角肌运动反应终点组;B组(20例),肱二头肌运动反应终点组;C组(20例),三角肌和肱二头肌运动反应终点组。比较各组在刺激域电流、获得终点时间、合作患儿运动阻滞起效时间及神经阻滞效果的差异。结果组间刺激域电流、运动阻滞起效时间、神经阻滞效果差异无统计学意义(P>0.05);A、B组获得终点时间大于C组(P<0.05)。结论三角肌运动反应终点可以作为小儿经肌间沟臂丛神经阻滞穿刺针正确定位的标志。
The purpose of this study is to provide a reference for the clinical application of deltoid motor responses in pediatric brachial plexus block as the endpoint of peripheral nerve stimulator. Methods Sixty children undergoing upper limb operation were randomly divided into three groups: group A (n = 20), deltoid motor response end point group (group B) (n = 20 cases), biceps motor response end point group, C group (20 cases), deltoid muscle and biceps motor end point group. The differences of stimulation current, end point, onset time of onset of motor block and effect of nerve block were compared between groups. Results There was no significant difference in stimulation current, time to onset of block, and nerve block between the two groups (P> 0.05). Endpoints of group A and group B were longer than those of group C (P <0.05). Conclusions The end point of deltoid motor response can be used as a marker for accurate positioning of pediatric brachial plexus block in children.