Author(s): Egeli E, Ciekci G, Silan F, Oztrk O, Harputluolu U,
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Abstract OBJECTIVE: The etiology of deafness can be classified as genetic, acquired and unknown. An unknown etiology was a high incidence in previous reports. The aim of this study is to explore the etiology of deafness and to reduce the cases in the unknown group. METHODS: This study was conducted on 162 students at the Yeditepe School for the deaf. Otologic, physical and psychological examinations were performed by a team of doctors including four otologists, a geneticist, a dentist, an ophthalmologist and an audiologist. RESULTS: A genetic cause was identified in 41.35\%, acquired 37.65\% and unknown 20.98\%. Genetic etiologies were stratified as familial and syndromic subgroups. A familial cause was found in 60 of 162 children and in 22 of those 60 cases, the parents had a consanguineous marriage. There was 11 cases associated with a syndrome. Ninety four minor abnormalities have been established in some deaf children. Febrile convulsion (36\%) was identified as the most common etiology in acquired cases. CONCLUSION: In contrast with other studies the consanguineous marriage was present in 36.6\% of the familial cases and 38.8\% in total of the school. An unknown etiology was reported in high rates in previous reports. These unknown cases could be described as a part of a syndrome by a crowded team of consultants. Evaluation of early diagnostic criterias and minor abnormalities can help us to provide early rehabilitation of deafness in childhood.
This article was published in Int J Pediatr Otorhinolaryngol
and referenced in Advancements in Genetic Engineering