[en] Objective: Sudden deafness is defined as sudden-onset sensorineural hearing loss in less than 72 hours, with loss of 30 or more decibels (dB) at three consecutive frequencies in tonal audiometry. In 90% of the cases it is not possible to determine its etiology giving rise to what is known as idiopathic sudden deafness. Our objective is To describe patient?s characteristics with diagnosed ISHL in the last twenty years, to identify prognostic factors and show the results in regards of treatment. Method: Retrospective descriptive study of 58 patients, diagnosed with ISHL between 1995-2016. Level of hearing loss was determined as well as the degree of posterior recovery. Cardiovascular risk factors were studied, in addition to association with other symptoms, the onset of treatment, severity of hearing loss and morphology of the audiometric curve. Results: No association was found between hearing recovery and different cardiovascular risk factors. 24.1% of the patients presented a complete improvement. Partial improvement and mild improvement were obtained in 17.2% each. 41.5% did not obtain any improvement with a worse hearing prognosis in those patients with profound hearing loss. 100% of recovery was obtained in subjects with ascending audiometric morphology. The most common associated symptom was tinnitus. Accompanying vestibular symptoms as an initial manifestation determine a worse hearing prognosis. Starting time from the emergence of hypoacusis until the instauration of systemic (IV) treatment was not related to a better prognosis. 54% of the patients did not show any improvements with ITD and systemic treatment compared to a 75% in those treated exclusively with systemic treatment. This was not statistically significant. Conclusions: Vestibular involvement, hypoacusis severity and hearing curve morphology are determinant prognostic factors. Although there are good outcomes published using ITD as recovery treatment, our experience does not determine an evident benefit of its use on subjects with ISHL.

[es] Introduccion y Objetivo: La sordera s?bita (SS) se define como la hipoacusia neurosensorial de inicio brusco, en menos de 72 horas, con p?rdida de 30 o m?s decibelios (dB) en tres frecuencias consecutivas en la audiometr?a tonal. En el 90% de los casos no es posible determinar su etiolog?a dando lugar a lo que se conoce como sordera s?bita idiop?tica (SSI). El objetivo de este estudio es describir las caracter?sticas de los pacientes con SSI diagnosticados en los ?ltimos 20 a?os, identificar factores pron?sticos y mostrar los resultados en funci?n del tratamiento. M?todo: Estudio descriptivo retrospectivo de 58 pacientes diagnosticados de SSI entre 1995-2016. Se determinaron el nivel de p?rdida auditiva y el grado de recuperaci?n posterior. Se estudiaron los factores de riesgo cardiovascular, asociaci?n con otros s?ntomas, inicio del tratamiento, severidad de la hipoacusia y morfolog?a de la curva auditiva. Resultados: No se encontr? relaci?n entre la recuperaci?n auditiva y los diferentes factores de riesgo cardiovascular. Presentaron una mejor?a completa un 24,1%, parcial un 17,2% y leve el 17,2%. El 41,5% no obtuvo ninguna mejor?a con un peor pron?stico auditivo en los sujetos con hipoacusia profunda. Se obtuvo un 100% de recuperaciones completas en los sujetos con morfolog?a inclinaci?n ascendente. El s?ntoma asociado m?s frecuente fue el ac?feno. Los s?ntomas vestibulares al inicio del cuadro, determinaron un peor pron?stico auditivo. El tiempo de inicio desde la aparici?n de la hipoacusia hasta la instauraci?n del tratamiento intravenoso no se ha relacionado con una mejor evoluci?n. El porcentaje ?sin mejor?a? es del 54% (DIT y tratamiento sist?mico) frente al 75% en los tratados exclusivamente con tratamiento intravenoso, pero esta mejor?a no tiene significaci?n estad?stica. Conclusiones: La afectaci?n vestibular, severidad de la hipoacusia y la morfolog?a de la curva auditiva son determinantes como factor pron?stico. Aunque hay mejores resultados utilizando la DIT como tratamiento de rescate, nuestra experiencia no determino un beneficio evidente de su uso en sujetos con SSI.