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Vol. 60. Issue 2.
Pages 90-98 (January 2009)
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Vol. 60. Issue 2.
Pages 90-98 (January 2009)
Study of the relationship of stapedial reflex thresholds induced during cochlear implant surgery and the highest hearing comfort of paediatric patients
Estudio de la correlación entre los umbrales del reflejo estapedial inducido durante la cirugía del implante coclear y la máxima comodidad auditiva del paciente pediátrico
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Héctor Vallésa,
Corresponding author
hvalles@salud.aragon.es

Corresponding author.
, Juan Royob, Amaya Lázarob, José Ignacio Alfonsob, Raquel Artalb
a Facultad de Medicina, Universidad de Zaragoza, Zaragoza, Spain
b Servicio de Otorrinolaringología, Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain
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Abstract
Introduction and goals

We have studied the relationship between the minimum stapedial reflex thresholds induced by means of the intra-operative stimulation of the cochlear implant and the post-operative thresholds of highest auditory comfort level.

Methods

We have assessed the maximum auditory comfort at the end of the first and second quarters following activation of the cochlear implant, by which time the strategy for codification of the stimuli and the programming map are considered to be already stable. The study was carried out at our cochlear implants unit. All the patients in the study had bilateral sensorineural deafness of varying aetiology and, following our standardized battery of diagnostic tests, were considered to be good candidates for cochlear implant. All aspects of the surgical technique were kept the same in order to be able to compare the results better. All members of the study were fitted with at least one Nucleus Freedom implant with Contour Advance Electrode.

Results

This study has been carried out on 24 cochlear implants placed in 22 patients younger than 14 years old.

Conclusions

After assessing our experience, we can conclude that, in the Nucleus Freedom with Contour Advance Electrode cochlear implant, there is a positive statistical relationship between the levels of acoustic reflex induction obtained at the peri-operative stage and the levels of maximum auditory comfort, as determined by behavioural observation techniques for each of the different electrodes, in children up to 14 years old.

Keywords:
Cochlear implant
Programming
Acoustic reflex
Resumen
Introducción y objetivos

Hemos estudiado la relación entre los umbrales mínimos del reflejo estapedial, inducidos mediante la estimulación intraoperatoria del implante coclear, y los umbrales postoperatorios de máxima confortabilidad auditiva.

Métodos

Hemos valorado dicha confortabilidad auditiva al final del primero y el segundo trimestre, tras la activación del implante coclear, momento en el que se considera que la estrategia de codificación de los estímulos y el mapa de programación utilizados ya son estables. El estudio ha sido realizado en nuestra unidad de implantes cocleares. Todos los pacientes en estudio, afectos de hipoacusia neurosensorial bilateral plurietiológica, tras la realización de nuestra sistemática protocolizada de pruebas diagnósticas, fueron considerados como buenos candidatos para la implantación coclear. La técnica quirúrgica se ha uniformizado al máximo en todos sus aspectos, a fin de poder comparar mejor sus resultados. Todos los integrantes del estudio eran portadores de, al menos, un implante Nucleus Freedom con Contour Advance Electrode.

Resultados

Este estudio se ha realizado sobre 24 implantaciones cocleares realizadas en 22 pacientes menores de 14 años.

Conclusiones

Tras la valoración de nuestra experiencia, podemos concluir que, en el modelo Cochlear Freedom con Contour Advance Electrode, hay una relación estadística positiva entre los grados de inducción del reflejo estapedial obtenidos peroperatoriamente y los grados de máximo confort auditivo determinados mediante técnicas de observación del comportamiento, para cada uno de los diferentes electrodos, en niños de hasta 14 años de edad.

Palabras clave:
Implante coclear
Programación
Reflejo estapedial

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