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Original Article

Prevalence and audiological characteristics in individuals with auditory neuropathy/auditory dys-synchrony

Prevalencia y caracteristicas audiológicas de la neuropatía/disincronía auditiva

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Pages 360-366 | Published online: 07 Jul 2009
 

Abstract

The objectives of this study were to (a) estimate the prevalence of auditory dys-synchrony in Mysore, a city of one million population in Southern India and, (b) present the results of audiological testing of this clinical population as well as the relationship between these figures. A register-based study design was employed wherein the results of audiological tests of all patients who visited the Department of Audiology, All India Institute of Speech and Hearing between January 2000 and December 2003 were reviewed. Results showed that the prevalence of auditory dys-synchrony was around 1 in 183 in individuals with sensory neural hearing loss. Behavioural thresholds and speech identification scores were variable. Around 60% of the individuals had no measurable speech identification scores. There was no relation between the hearing thresholds and speech identification scores or between otoacoustic emissions and speech identification scores. These results indicate that auditory dys-synchrony is not an extremely rare disorder.

Sumario

Los objetivos de este estudio fueron: (a) estimar la prevalencia de la disincronía auditiva en Mysore, ciudad de un millón de habitantes en el sur de la India y (b) presentar los resultados de las pruebas auditivas en esa población, así como las relaciones entre ambos resultados. Se diseñó un estudio basado en los registros de las pruebas audiológicas de todos los pacientes que asistieron al Departamento de Audiología del All India Institute of Speech and Hearing, entre enero de 2000 y diciembre de 2003. Los resultados mostraron que la prevalencia de la disincronía auditiva fue de alrededor 1 en 183 individuos con hipoacusia sensorineural. Los umbrales conductuales y las puntuaciones en discriminación del lenguaje fueron variados. Alrededor del 60% de los individuos no tuvieron puntuaciones medibles en la identificación del lenguaje. No hubo relación entre los umbrales auditivos y las puntuaciones en la identificación del lenguaje o entre las emisiones otoacústicas y esas mismas calificaciones. Estos resultados indican que la disincronía auditiva no es un trastorno extremadamente raro.

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