The Effect of Cochlear Implantation on the Improvement of the Auditory Performance in 2-7 Years old Children, Shiraz 2004-2008

AUTHORS

Sayed Basir Hashemi 1 , Abdolreza Rajaeefard 2 , * , Hasan Norouzpour 2 , Hamid Reza Tabatabaee 2 , Leila Monshizadeh 3

1 ENT Department, Shiraz University of Medical Sciences, Shiraz, IR Iran

2 Epidemiology Department, Shiraz University of Medical Sciences, Shiraz, IR Iran

3 Fars Cochlear Implantation Center, Shiraz, IR Iran

How to Cite: Hashemi S B, Rajaeefard A, Norouzpour H, Tabatabaee H R, Monshizadeh L. The Effect of Cochlear Implantation on the Improvement of the Auditory Performance in 2-7 Years old Children, Shiraz 2004-2008, Iran Red Crescent Med J. Online ahead of Print ; 15(3):223-228. doi: 10.5812/ircmj.4033.

ARTICLE INFORMATION

Iranian Red Crescent Medical Journal: 15 (3); 223-228
Published Online: March 4, 2013
Article Type: Research Article
Received: December 31, 2011
Accepted: January 7, 2013
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Abstract

Background: Hearing loss is the most common sensorineural deficiency in human beings. Cochlear implantation is introduced worldwide to treat the severe to profound sensorineural hearing loss, and can result in both speech comprehension and production.

Objectives: The present study aims to determine the effect of cochlear implantation on the improvement of the auditory performance in 2-7 years old children.

Patients and Methods: The present follow-up study is a kind of cohort study which was conducted on 98 children between 2-7 years old who had referred to Fars Cochlear Implantation Center. The patients information was gathered from their profiles both before and after the operation. The auditory performance score was obtained in 3 stages; 6 months, 1 year, and 2 years after the cochlear implantation through the Cap test. The data was analyzed using the nonparametric Friedman test as well as Mann-Withney, Kruskal-Wallis, and Spearman's Ranks Correlation coefficients.

Results: The mean and the median of the auditory performance score of the children who had undergone the cochlear implantation revealed a significant improvement from 6 months to 1 year, and 2 years after the implantation. It showed a significant statistical association between implantation age, type of hearing loss, regular reference, and the length of being present in the rehabilitation program with the auditory performance. It showed no significant association between sex, mothers level of education, being monolingual or bilingual, and family size with the auditory performance.

Conclusions: This study revealed that the type of hearing loss, Presence in the rehabilitation program, and the age of cochlear implantation can be major prognostic factors of the response to the treatment, then the countrys health policy makers and health planners must executively take into account the infants hearing screening program during the first 6 month of age.

Keywords

Cochlear Implantation Hearing

© 2013, Author(s). This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited.

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