An Etiological Study on Hearing Loss of 813 Deaf Students in Hubei Province / 听力学及言语疾病杂志

ABSTRACT

Objective In order to study the etiology and the hearing status of the deaf students in Hubei province, a survey was carried out from April 1999 to June 2000.Methods A total number of 813 deaf students in Hubei province were examined with audiometer and investigated through questionnaire. The pedigress analysis was conducted in deaf students with family history.Results The pedigrees of 227 familes with deafness were obtained, the inheritance pattern of 167 families could be ascertained. 232(28.5%) deaf students were diagnosed congenital deafness, 581 (71.5%) students were diagnosed acquired deafness. The degrees of deafness could be ascertained with 359(44.1%) students of profound deafness, 323(39.7%) students of severe deafness, 111(13.7%) students with moderate to severe deafness, 11(1.4%) students of moderate deafness, and 9(1.1%) students of mild deafness.Conclusion The hearing loss of deaf students is very serious, and genetic factor and ototoxic antibiotics were a principal causation in the occurrence of deafness.