Audiologic Findings In Ménière's Syndrome

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Abstract
Audiologic findings on the normal and affected side of thirty cases of unilateral Ménière's syndrome are described. All patients show continuous recruitment or above threshold and continuous recruitment. There is no significant difference of aural overload threshold above audiometric zero between affected and opposite ears. Abnormal tone decay and wide separation between pulsed and steady tone tracings, indicating slow adaptation, is not characteristic of hair cell lesions. Shortly after an exacerbation of hearing loss, Békésy audiograms may show slight separation and reduced amplitude of steady tone tracings in the area of increased hearing loss. This is considered due to transient dendrite involvement causing rapid adaptation. High tone hearing loss with slight separation and reduced amplitude of steady tone tracings is seen more often in long standing cases and attributed to secondary or unrelated dendrite involvement.

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