Abstract
目的 探讨并制定腕管综合征早、中、晚3期电生理的分期定量指标,为临 床分期提供电生理依据.方法对临床诊断为腕管综合征患者的74例120侧 ,测定拇短展肌的肌 电图(EMG),正中神经远端运动电位的潜伏期(distal motor latency,DML),1~3指的感觉电 位(SNAP),以及环指在正中、尺神经上SNAP潜伏期的差值及感觉神经传导速度,并对其结果进行分析 .结果早期:EMG(-).DML<4.5ms.感觉电位:正中、尺神经环指感觉电位潜伏期差值异常(≥0.4 ms),1~3指中至少有1指的波幅较健侧下降超过1/2.中期:E MG(±).DML≥4.5ms.感觉电位:1~3指的感觉电位可引出,但传导速度减慢(<40.0ms) .晚期:EMG(+).DML明显延长或消长.感觉电位:1~4指中至少有1指的感觉电位消失 .结论早期和中期腕管综 合征的分期指标为DML,而中期和晚期腕管综合征的分期指标为运动或感觉电位的存在与否。
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