The Journal of International
Advanced Otology
Original Article

Auditory Performance in Early Implanted Children with Cochleovestibular Malformation and Cochlear Nerve Deficiency

1.

Department of Otorhinolaryngology Head and Neck Surgery, Kulliyyah of Medicine, International Islamic University Malaysia, Kuantan, Pahang, Malaysia

2.

Department of Otorhinolaryngology Head and Neck Surgery, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia

3.

Centre for Rehabilitation and Special Needs, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia

4.

Department of Otolaryngology Head and Neck Surgery, Department of Communication Sciences and Disorders, The University of Iowa, Iowa City, USA

J Int Adv Otol 2020; 16: 297-302
DOI: 10.5152/iao.2020.8563
Read: 67 Downloads: 31 Published: 16 October 2020

OBJECTIVES: This study aimed to report the auditory performance in children with cochleovestibular malformation (CVM)/cochlear nerve deficiency (CND) who were implanted early at the Universiti Kebangsaan Malaysia Medical Centre, using Categorical Auditory Performance (CAP)-II score and Speech Intelligibility Rating (SIR) scales, and to compare the outcome of their matched counterparts.

MATERIALS and METHODS: A total of 14 children with CVM/CND with unilateral cochlear implant (CI) implanted before the age of 4 years old were matched and compared with 14 children with normal inner ear structures. Their improvement in auditory performance was evaluated twice using CAP-II score and SIR scales at 6-month intervals, with the baseline evaluation done at least 6 months after implantation.

RESULTS: The average age of implantation was 31±8 and 33±7 months for the control group and the case (CVM/CND) group, respectively. Overall, there were no significant differences in outcome when comparing the entire cohort of case subjects and their matched control subjects in this study. However, the improvement in CAP-II scores and SIR scales among the case subjects in between the first and second evaluations was statistically significant (p=0.040 and p=0.034, respectively). With longer duration of CI usage, children with CVM/CND showed significant speech perception outcome evident by their SIR scales (p=0.011).

CONCLUSION: Children with radiographically malformed inner ear structures who were implanted before the age of 4 years have comparable performance to their matched counterparts, evident by their similar improvement of CAP-II scores and SIR scales over time. Hence, this group of children benefited from cochlear implantation.

Cite this article as: Abdullah A, Othman IA, Goh BS, Umat C, Tyler R. Auditory Performance in Early Implanted Children with Cochleovestibular Malformation and Cochlear Nerve Deficiency. J Int Adv Otol 2020; 16(3): 297-302.

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ISSN1308-7649 EISSN 2148-3817