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Original Articles

Pediatric cochlear implantation: How much hearing is too much?

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Pages 91-97 | Received 08 Jul 2008, Published online: 07 Jul 2009
 

Abstract

Audiologic candidacy criteria for determining cochlear implantation candidacy in children are evolving. The objective of the study was to examine clinical practice related to the cochlear implantation of children who typically do not meet audiologic criteria for this technology. Practitioners’ perspectives on the process and the factors influencing candidacy decisions were explored through focus group interviews with hospital and school-based practitioners. The interviews were analysed using qualitative techniques to identify key issues. The findings from the interviews informed a questionnaire which was sent to all cochlear implant centers in Canada to further examine clinician views and experiences with this special population. Responses were collected from 11 of the 12 centers and indicated that children with hearing outside typical criteria were receiving implants. The definition of ‘borderline’ varied across the programs from approximately 70 dB HL to less than 90 dB HL. All centers emphasized the importance of considering factors beyond the child's audiometric thresholds in candidacy decision-making.

Sumario

Los criterios audiológicos para determinar la candidatura de un niño a implante coclear están evolucionando. El objetivo de este estudio fue examinar la práctica clínica relacionada con la implantación de niños que típicamente no reúnen los criterios para esta tecnología. Se exploraron las perspectivas de los médicos en el proceso y los factores que influyen en las decisiones de una candidatura a través de entrevistas de grupos concretos de médicos en hospitales y escuelas. Las entrevistas se analizaron utilizando técnicas cuantitativas para identificar las cuestiones clave. Los hallazgos de las entrevistas respondieron un cuestionario que fue enviado a centros de implante coclear en Canadá para mayor análisis desde el punto de vista clínico y de experiencias con esta población especial. Se colectaron las respuestas de 11 de los 12 centros que indicaron que los niños con audición fuera de los criterios estaban recibiendo implantes. La definición de “limítrofe” varió entre programas aproximadamente en 70 dB HL hasta menos de 90 dB HL. Todos los centros enfatizaron la importancia de considerar factores por más allá de umbrales audiométricos del niño en la decisión sobre la candidatura.

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