Cases of Meniere's disease with a history of hearing loss
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概要
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Meniere's disease (MD) with preexisent hearing loss was studied. Twenty-five MD patients with a history of hearing loss were involved in the study. The patients were divided into three groups according to their clinical histories.Results : <BR>1) MD with severe preexistent hearing loss was seen in 3 patients. The onset of hearing loss was most frequently found to be when the patients were about twenty years old and the interval to the onset of vertigo and hearing loss ranged from about 15 to 25 years. The causes of hearing loss were juvenile unilateral total deafness (1), parotitis (1) and acoustic trauma (1). For this group, delayed hydrops was suspected.<BR>2) MD with moderate to slight hearing loss which preexisted was found in as many as 18 cases. The onset of hearing loss was frequent in the second to fourth decades of life and the interval between the onset of vertigo and hearing loss varied widely, i.e. from 1 year to 42 years. The causes of hearing loss were unknown (11), otitis media (3), noise (2), acoustic trauma (1) and juvenile unilateral perceptive hearing loss (1). For this group, delayed hydrops could not be assumed but a little evidence available at this moment seems to suggest that a predisposition to MD had been created by hearing loss.<BR>3) Four cases were considered to represent a shift from sudden deafness (SD) to MD. Three of them weve accompanyied by vertigo and the remaining one was not. Hearing loss appeared at comparatively advanced ages. The interval between the onset of hearing loss and that of MD was short, ranging from 3 to 33 months. For this third group, the following 3 situations could be suggested : (1) SD shifted to MD, (2) SD had caused delayed hydrops and (3) MD from the beginning.
- 日本めまい平衡医学会の論文