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Year : 2015  |  Volume : 5  |  Issue : 4  |  Page : 206-209

The pure tone audiogram assessment of the students of a special school for deaf in Kaduna

1 Department of Surgery, ENT Unit, Ahmadu Bello University Teaching Hospital, Zaria, Nigeria
2 Department of ENT, Aminu Kano Teaching Hospital, Kano, Nigeria

Correspondence Address:
Dr. Iliyasu Yunusa Shuaibu
Department of Surgery, ENT Unit, Ahmadu Bello University Teaching Hospital (ABUTH), Shika, Zaria
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/2278-9596.174661

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Background: Hearing impairment in children is an important public health problem. Children with hearing impairment are educated in special schools (schools for the deaf) and in our locality all are assumed to be deaf without necessarily subjecting them to audiological evaluation in some cases. The objective of this study was to identify the cause of hearing impairment, type and degree of hearing loss, and use of hearing aids among students attending special schools for the deaf in Kaduna. Patients and Methods: This was a cross-sectional study conducted over a period of 4 months between February and May, 2014. Students aged 7-18 years attending Kaduna State Special Education School for the deaf, Katsina road, and demonstration school for the deaf, Kawo Kaduna, were recruited for the study. A questionnaire investigating the student's biodata, causes of hearing impairment, and use of hearing aids was administered. This was followed by ear examination and pure tone audiometric tests. The data were analyzed using Statistical Package for the Social Science version 16. Results: A total of 307 participants were recruited as the study group. Among them, 58.6% were males and 41.4% were females. The mean age of the study subjects was 13.5 ± 3.6 standard deviation (SD) years. Only 27.7% of the study population have a known cause of their hearing impairment. Two hundred and ninety seven (97.4%) of the students had sensorineural hearing loss, while out of the remaining subjects 5 (1.6%) have conductive and 3 (0.9%) have mixed hearing losses. Two hundred and sixty eight (87.3%) of the participants had profound hearing loss while 37 (12%) had mild-to-severe hearing loss. Two students (0.7%) were found to have normal hearing. No student was found to be using hearing aid. Conclusion: In majority of the students, the cause of the hearing impairment is unknown. Some of the students have residual hearing and none of them is using hearing aids. Further evaluation and possible amplification may be required to rehabilitate some of these students into normal schools.

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