Aso S, Watanabe Y
Department of Otolaryngology, Faculty of Medicine, Toyama Medical and Pharmaceutical University, Japan.
Acta Otolaryngol Suppl. 1994;511:87-90. doi: 10.3109/00016489409128307.
It is known that delayed endolymphatic hydrops (DEH) occurs in patients with unilateral and/or bilateral profound hearing loss. In the ipsilateral and bilateral types of DEH, no audiological tests can be performed on the affected ear because of profound deafness, although these tests can be done in the contralateral type. Electrocochleography (ECochG) was recorded on better hearing ears in both types of DEH. The results showed an increased negative summating potential (SP) in 6 out of 10 contralateral DEH patients whereas it could be measured in only one of 10 ipsilateral DEH patients. The mean SP/AP ratio of the contralateral type was 0.42 which was significantly larger than that of the ipsilateral type. The results suggest that contralateral-type DEH has the same pathology in the cochlea as Meniere's disease, and that ECochG can distinguish between these two types of DEH.
已知迟发性内淋巴积水（DEH）发生于单侧和/或双侧重度听力损失的患者中。在同侧和双侧型DEH中，由于重度耳聋，患耳无法进行听力学测试，尽管对侧型可以进行这些测试。在两种类型的DEH中，均在听力较好的耳朵上记录了电耳蜗图（ECochG）。结果显示，10例对侧型DEH患者中有6例负和电位（SP）增加，而10例同侧型DEH患者中只有1例可测量到SP。对侧型的平均SP/AP比值为0.42，明显高于同侧型。结果表明，对侧型DEH在耳蜗中的病理与梅尼埃病相同，并且ECochG可以区分这两种类型的DEH。
