当教室における小児感音難聴の推移について

概要

論文の詳細を見る
We investigated 255 children with perceptive deafness of unknown ethiology for more than three years between April,1977 and December 1991. The subjects were classified into two groups. One was the progressive deafness group with a threshold at least two consecutive frequencies of the audiogram showing more than 15 dB increase from the first measurement. The other was the non-progressive group which showed a stable hearing loss during the observation period. In this study, we found 54 patients with progressive deafness, and 201 patients with non progressive deafness. Twenty eight percent of the children with bilateral hearing loss and 11% of those with unilateral hearing loss belonged to the progressive deafness group.<BR>The ages of the great e st increase in hearing loss in the progressive deafness group were between seven and eight years old; the hearing loss in this group mainly fell into the higher frequency region.
耳鼻咽喉科臨床学会の論文