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目的 :探讨不同起病部位的ALS病人在 4个下运动神经元支配区域异常肌电的分布情况。方法 :对 10 2例临床诊断为ALS的病人分别行 4组下运动神经元区域 (脑干 ,颈 ,胸 ,腰骶髓 )的针极肌电图检查。对 87例同时进行了胸锁乳突肌的检查。结果 :4组肌电检查区域的结果示 :颈段与胸段异常率在各起病组中最高 ,脑干及腰骶段在各组中异常率不同 (差异有显著意义 ,P <0 0 5 ) ;胸锁乳突肌上、下肢起病组的异常率均高于同组的脑干支配肌。结论 :在ALS病人中 ,异常肌电的分布与起病部位有关。不论哪一部位起病 ,4个区域均可受累 ,因此必须全都检查。胸锁乳突肌具有特殊的诊断及鉴别诊断价值
Objective: To investigate the distribution of abnormal EMGs in ALS patients with different diseased sites in the area dominated by 4 lower motor neurons. Methods: A total of 102 patients with clinically diagnosed as ALS underwent needle electromyography (EMG) examination in 4 groups of lower motor neurons (brainstem, neck, thoracic, lumbosacral spinal cord). 87 cases of sternocleidomastoid examination simultaneously. Results: The results of EMG examination in 4 groups showed that the abnormal rates of cervical and thoracic segments were the highest in each onset group, and the abnormal rates of brain stem and lumbosacral segments were different in each group (the difference was significant, P <0 0 5). The abnormal rates of sternocleidomastoid and lower limb onset group were higher than those in the same group. Conclusion: In patients with ALS, the distribution of abnormal EMG is related to the site of onset. No matter what part of the onset, 4 areas can be affected, it must be all checked. Sternocleidomastoid muscle has a special diagnosis and differential diagnosis