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Inicio Acta Otorrinolaringológica Española Cochlear Implant in Patients With Sudden Unilateral Sensorineural Hearing Loss a...
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Vol. 63. Issue 1.
Pages 15-20 (January - February 2012)
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Vol. 63. Issue 1.
Pages 15-20 (January - February 2012)
Original Article
Cochlear Implant in Patients With Sudden Unilateral Sensorineural Hearing Loss and Associated Tinnitus
Implante coclear en pacientes con hipoacusia súbita unilateral y acúfeno asociado
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Ángel Ramosa, Rubén Polob, Elisabeth Masgoreta, Ovidio Artilesa, Isidoro Lisnera,
Corresponding author
ilisner@hotmail.com

Corresponding author.
, María L. Zaballosa, Cecilia Morenoa, Ángel Osorioa
a Servicio de Otorrinolaringología, Complejo Hospitalario Universitario Insular Materno-Infantil, Las Palmas de Gran Canaria, Spain
b Servicio de Otorrinolaringología, Hospital Ramón y Cajal, Madrid, Spain
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Tables (4)
Table 1. Evaluation Protocol Used in the Study of Tinnitus: Set of Tests That Evaluate the Implication of the 3 Symptoms (Tinnitus, Hyperacusis and Hearing Loss).
Table 2. Comparison of the 10 Patients in the Study Through the Tinnitus Evaluation Protocol.
Table 3. Characteristics of Tinnitus Regarding Location, Type, Frequency and Intensity.
Table 4. Characteristics of Tinnitus (Location, Type, Frequency and Intensity).
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Abstract
Introduction and objectives

To assess the efficacy of cochlear implantation in patients with unilateral sudden sensorineural hearing loss and associated disabling tinnitus.

Methods

Ten patients suffering from severe-to-profound sudden hearing loss and tinnitus in the affected ear received implants. The sample comprised 4 men and 6 women, with a mean age of 42.7 years (range 34–62) at implantation. The severity of the tinnitus was evaluated with the Spanish validated version of the Tinnitus Handicap Inventory (THI) and a visual analogue scale. These assessments were obtained before and after implantation.

Results

Tinnitus suppression was observed in 2 patients. In 7 cases, we observed an improvement in the THI, in different degrees, and 1 patient remained without changes. Tinnitus worsening was not found in the series studied.

Conclusions

Tinnitus reduction following cochlear implantation can be explained by several mechanisms, such as habituation, acoustic masking, direct stimulation of the cochlear nerve and reorganisation of cortical areas. Even though further research is required, cochlear implantation is an effective method for the treatment of disabling tinnitus in patients with severe-to-profound unilateral sudden sensorineural hearing loss.

Keywords:
Cochlear implant
Tinnitus
Sudden hearing loss
Resumen
Introducción y objetivos

Valorar la eficacia del implante coclear en pacientes con hipoacusia súbita unilateral y acúfeno incapacitante asociado.

Métodos

Se han implantado 10 pacientes con hipoacusia súbita severa-profunda unilateral y acúfeno asociado, entre los cuales 4 son varones y 6 mujeres, con media de edad a la implantación de 42,7 años (rango: 34-62). Hemos evaluado la severidad del acúfeno mediante el Tinnitus Handicap Inventory (THI) en su versión validada al castellano y una escala analógica visual pre y postimplantación.

Resultados

Se ha observado una supresión del acúfeno en dos pacientes. Siete pacientes han experimentado una mejoría del THI en distintos grados y no se han producido cambios en un paciente. No ha habido empeoramiento del acúfeno en ningún caso de la serie estudiada.

Conclusiones

La reducción del acúfeno tras implantación coclear se puede deber a varios mecanismos, tales como la habituación, enmascaramiento acústico, estimulación directa del nervio coclear y reorganización de las áreas corticales. Aunque sean precisos más estudios, el implante coclear es un método efectivo para el tratamiento del acúfeno incapacitante en pacientes con hipoacusia súbita severa-profunda unilateral.

Palabras clave:
Implante coclear
Acúfeno
Hipoacusia súbita

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