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一般认为声带位于旁正中位且明显固定,而发音正常之Gerhardt氏综合征为双侧声带外展肌麻痹。此病症为退行性病变,如多系统萎缩和侧索硬化病时有报道,也有仅作为单独病症报道的。该文报告此病症6例,其中3例伴节段性或多灶性肌张力障碍,3例仅有呼吸症状。详细地记录6例病人的临床表现及甲杓肌(声带紧张肌)和环杓后肌(声带外展肌)的EMG(肌电图)。吸气性喘鸣为间歇性,可于清醒、睡眠状况下,在轻度劳累或平静时均可发生。EMG检查结果显示:甲杓肌有三型自主
It is generally believed that the vocal cord is located at the midline and obviously fixed, while Gerhardt’s syndrome with normal pronunciation is paralysis of the bilateral vocal cord abductor muscle. The condition is degenerative, as is the case with multiple system atrophy and lateral sclerosis, and only as a separate condition. This article reports 6 cases of this condition, of which 3 cases with segmental or multifocal dystonia and 3 cases with respiratory symptoms only. The clinical manifestations of 6 patients were recorded in detail and the EMG (EMG) of the subarachnoid muscles (vocal cord tension muscles) and the posterior capsid muscles (vocal cord extensor muscles) were recorded. Aspiration wheezing is intermittent, may be awake, sleep conditions, mild fatigue or calm can occur. The results of EMG examination showed that there are three types of spontaneous muscle