Auditory, Speech and Language Development in Cochlear Implant Children: A One Year Longitudinal Study
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ORIGINAL ARTICLE
Auditory, Speech and Language Development in Cochlear Implant Children: A One Year Longitudinal Study Venkata Damarla1 • Udit Saxena1 • S. B. Rathna Kumar2 • Gish Chacko1 Vikas Nagabathula1
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Received: 8 October 2020 / Accepted: 3 November 2020 Ó Association of Otolaryngologists of India 2020
Abstract The advent of Cochlear Implants (CI) has bought with it, the goal of spoken language performance for severe—profound sensori-neural hearing loss (SNHL) as par with the normal hearing listeners. The aim of this study was to evaluate the outcome of paediatric cochlear implantation in auditory and speech skills below the age of 5 years. The present study consisted of 50 childrens. Auditory skills were assessed in terms of audiometric thresholds and localization abilities. Speech – Language skills were measured using; Categories of Auditory Performance –CAP; Meaningful Use of Speech Scale – MUSS; Meaningful Auditory Integration Scale – MAIS and Speech intelligibility Rating – SIR. Hearing thresholds obtained from all the subjects for pre implant and post implant conditions of 3rd, 6th, 9th, 12th month conditions, evidenced a high significant (p \ 0.001) improvement across all test frequencies 500, 1000, 2000 and 4000 Hz. There was also a statistically significant difference across successive measurements of auditory and speech skills, as determined by ANOVA (F (4, 245) = 151.33, p \ 0.001 for CAP; F (4, 245) = 89.636, p \ 0.001 for SIR; F (4, 245) = 812.282 p \ 0.001 for MAIS and F(4, 245) = 435.677 p \ 0.001 for MUSS). Auditory localization abilities were also improved considerably over a period of one year. The present study added the evidence to the literature that cochlear implants significantly improved
& Venkata Damarla [email protected] 1
Department of Audiology, MAA Institute of Speech and Hearing, Hyderabad, India
2
Department of Audiology, Ali Yavar Jung National Institute of Speech and Hearing Disabilities (Divyangjan), Bandra (west), Mumbai, India
the hearing ability of children with severe-to-profound hearing loss. This study also demonstrated that, children were better able to make use of the auditory information perceived through the implant. Keywords Cochlear implants Hearing thresholds Auditory localization CAP SIR MAIS MUSS
Introduction There has been increasing demand for the cochlear implantation in children with hearing loss. Approximately, 466 million people worldwide have disabling hearing loss, and 34 million of these are children. It is estimated that by 2050 over 900 million people will have disabling hearing loss [1]. In these 34 million children who have hearing loss, of which 60% of cases are due to preventable causes and other 40% has to be treated with hearing devices. Cochlear Implant (CI) is a good choice for children with severe – profound hearing loss, who cannot be benefited with conventional hearing aids. Although effectiveness of cochlear implantation is documented, clinical decisions regarding the benefit in pediatric population are yet not en
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