Relationship Between Each Vertiginous Attack and Hearing Disturbance in Ménière's Disease

Abstract

Vertiginous attacks associated with hearing disturbance, such as tinnitus, hearing impairment and fullness in the ear were investigated on their simultaneous graphic displays of the time course in each patient suffering from Ménière's disease by using a microcomputer. The mean interval time of successive two vertiginous attacks and the mean value of air-conduction hearing level at 250 Hz,500 Hz,1000 Hz and 2000Hz were dislpayed continuously on a graph. By observation the clinical course of each patient for long duration, it was concluded that following five sorts of vestibulocochlear symptom may be classified by interrelation between vertigo and hearing disturbance.
They are “T” type; recurrence of vertigo associated with hearing disturbance, “SD” type; recurrence of vertigo with sudden severe deafness without ma rked fluctuation of it, “L” type; improvement of hearing associated with vertiginous attacks, “V” type; recurrent vertigo without marked hearing di sturbance and “C” type; fluctuated hearing disturbances without vertigo.
Those symptomatic types may appear in a single case and the mechanism caused such a various type was discussed.