Hearing of Genetically Deaf Children
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概要
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Although genetic deafness does not always show symptomes (ie hard of hearing) in childhood, 72 cases of deaf children who were diagnosed as gentic deafness were checked with the aspect of their hearing, and the results were compared with that of the deafness with other origin in this investigation.The results of our investigation were summarized as follows.1. Sixteen percent of 956 cases of deaf children were found to be genetically deaf.2. The residual hearing in all frequencies was recognized in 52.8% of genetic deafness, and in 28.8% of deafness caused by asphyxia at birth.3. The type of audiogram in genetic deafness in comparison with that of deafness due to asphyxia at birth showed flatt form in large number and high tone abrupt form in small number. Any rising or through form audiogram was not shown in the deafness with asphyxial origin.4. Moderate hearing loss (41-70dB) was found in 44.4% of the total cases, severe loss (71-90dB) in 37.5% and profound loss in only 0.1%.5. Progressive hearing loss was found in 18% of the genetic deafness.
- 日本聴覚医学会の論文
日本聴覚医学会 | 論文
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