试题与答案

患者,男性,45岁,右手麻痛1年,有时夜间因麻痛而醒,近一个月来症状加重。查体,右大

题型:单项选择题 A3/A4型题

题目:

患者,男性,45岁,右手麻痛1年,有时夜间因麻痛而醒,近一个月来症状加重。查体,右大鱼际肌轻度萎缩,肌力4级,右手桡侧三指半皮肤刺痛觉减退,腕部Tinel征阳性,临床诊断是右腕管综合征。

患者做右上肢神经传导检查,最有可能出现的结果是()

A.正中神经腕部CMAP潜伏时延长,示指SNAP波幅低

B.尺神经腕部CMAP潜伏时延长,小指SNAP波幅低

C.正中神经腕部CMAP潜伏时正常,示指SNAP波幅正常

D.正中神经腕部CMAP潜伏时延长,小指SNAP波幅低

E.尺神经腕部CMAP潜伏时正常,小指SNAP波幅正常

答案:

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