一側性高度感音性難聴

抄録

Twenty-nine patients with unilateral severe sensori-neural hearing loss were studied in the light of preservation of semicircular canal function. Most ears were incidentally found to be deaf at the age of 3 to 13, but 4 adult ears became deaf after mumps infection. Twenty-five out of 29 were total deafness and other 4 had residual hearing at 254 and 500Hz.
Twenty-four ears had good response to 2ml ice water, but three ears revealed vestibular hypofunction.
Serological studies using complement fixation and hemagglutination inhibition tests were done to clarify the etiologies of the deafness with preserved semicircular canal function, and these tests revealed no specific cause of the unilateral deafness.
The conclusion of this study was that pathology of the severe unilateral sensori-neural deafness in children was in general in the cochlea and that most of the cases preserved the semicircular canal function.