Long Term Outcomes of Early Cochlear Implantation in Korea.
- Author:
Myung Whan SUH
1
;
Eung Kyung CHO
;
Bong Jik KIM
;
Sun O CHANG
;
Chong Sun KIM
;
Seung Ha OH
Author Information
1. Department of Otolaryngology-Head and Neck Surgery, Dankook University, College of Medicine, Cheonan, Korea.
- Publication Type:Original Article
- Keywords:
Cochlear implantation;
Long term outcome;
Maturation;
Picture vocabulary test;
Categories of auditory performance
- MeSH:
Child;
Cochlear Implantation;
Cochlear Implants;
Critical Period (Psychology);
Hearing;
Hearing Loss;
Humans;
Imidazoles;
Korea;
Language Development;
Language Tests;
Nitro Compounds;
Prospective Studies
- From:Clinical and Experimental Otorhinolaryngology
2009;2(3):120-125
- CountryRepublic of Korea
- Language:English
-
Abstract:
OBJECTIVES: The objective of this study was to compare the long-term auditory performance and language skill depending on the age of cochlear implantation in the Korean population. We especially tried to separate the effect of maturation/development from that of the age at implantation. METHODS: Eighty-six pre-lingual children with profound hearing loss who underwent a cochlear implantation before the age of six and had been followed for more than 3 yr were included in this study prospectively. Categories of Auditory Performance (CAP) and Korean Picture Vocabulary Test (K-PVT) were serially followed up. In order to separate the age at implantation effect, K-PVT results were readjusted to the child's chronological age in the normal hearing population. RESULTS: When the CAP and K-PVT scores were directly compared without chronological readjustment, we failed to show a significant difference for improvements according to the age at implantation. Early cochlear implantation was associated with better language development, only when the K-PVT scores were readjusted to percentile scores of their chronological age. CONCLUSION: Early cochlear implantation was associated with better language development even within the critical period. This advantage may be recognized only when the effect of the age at implantation is separated from the effect of maturation/development.
