両側性メニエ-ル病症例の発作前後の蝸電図所見の変化について (メニエ-ル病の研究-5-<特集>)

概要

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A case of bilateral Meniere's disease was investigated by extratympanic electrocochleography both during a period of impaired hearing and during a period of fairly good hearing.After a vertiginous attack, conventional audiometry showed progression of the hearing loss in the right ear, while the hearing loss in the left ear remained unchanged.In the right ear, the significant changes in electrocochleographic findings after the attack were elevation of the AP response shreshold, the prolongation of N1 latency, and an increase in the SP/AP ratio.In the left ear, N1 latency had been prolonged, the AP waveform was broad, no SP component was detected, and there were no significant changes in the electrocochleographic findings.Clinical evaluations of changes in the electrocochleographic findings after a vertiginous attack were discussed.
耳鼻咽喉科臨床学会の論文