Yamasoba T, Sugasawa M, Kikuchi S, Yagi M, Harada T
Department of Otolaryngology, University of Tokyo, Japan.
Eur Arch Otorhinolaryngol. 1993;250(7):418-22. doi: 10.1007/BF00180389.
Twenty-four patients with acute low-tone sensorineural hearing loss (ALHL) were examined using electrocochleography. The negative summating potential (SP) amplitude and the summating potential/action potential (AP) ratio were significantly greater in the ALHL patients than in normals. The SP/AP ratio was smaller in the ALHL patients than in patients with known Meniere's disease and moderate hearing loss, although the SP amplitude was somewhat greater in the former. An abnormal increase in the SP amplitude following click stimuli was found in 54% of the ALHL patients, while the SP/AP ratio was increased abnormally in 63% of these patients. These findings suggest that the pathophysiology of ALHL may be similar to that for endolymphatic hydrops.
对24例急性低频感音神经性听力损失（ALHL）患者进行了耳蜗电图检查。ALHL患者的负和电位（SP）振幅以及和电位/动作电位（AP）比值显著高于正常人群。虽然ALHL患者的SP振幅略高于已知梅尼埃病和中度听力损失患者，但其SP/AP比值却较小。在54%的ALHL患者中发现短声刺激后SP振幅异常增加，而在这些患者中有63%的患者SP/AP比值异常升高。这些发现提示，ALHL的病理生理学可能与内淋巴积水相似。
