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Resumen Introduccion La hipoacusia subita neurosensorial idiopatica (SSI) es la perdida de al menos 30 dB de causa desconocida. Dado que la recuperacion auditiva en SSI es variable, el rescate con corticoides intratimpanicos (CIT) podria contribuir a la recuperacion auditiva. Nuestro objetivo es analizar la respuesta auditiva tras CIT como rescate, en ausencia de recuperacion completa tras tratamiento sistemico. Material y metodo Realizamos un estudio observacional de cohortes historicas de los 125 casos detectados de SSI entre 2006 y 2014. De ellos, 16 obtuvieron a la semana recuperacion completa segun los criterios de Siegel. Los 109 casos restantes se analizaron en dos grupos: el que recibio CIT (grupo de tratamiento) y otro que no lo recibio (grupo control). Evaluamos la recuperacion auditiva a los 6 meses y a 2 anos. Resultados La media de audicion en la audiometria al diagnostico no tenia diferencias significativas entre los grupos. Al septimo dia del tratamiento sistemico, el PTA obtenido fue de 53,13 dB en el grupo control y de 66,11 dB en el grupo de estudio (p Conclusion Encontramos que el tratamiento de rescate con CIT en la SSI favorece la mejoria auditiva tras la ausencia de recuperacion despues de un tratamiento sistemico. Sin embargo, en la mayoria de los pacientes no consigue obtener una recuperacion completa segun criterios de Siegel.

Idiopathic sudden sensorineural hearing loss (ISSHL) is defined as an abrupt hearing loss of at least 30dB of unknown cause. The hearing response obtained after intratympanic steroid injection as a salvage treatment after a prior failure of initial systemic steroid treatment was analysed.An observational study was performed on 125 cases of ISSHL who were diagnosed from 2006 to 2014. Sixteen achieved complete recovery after one week according to Siegel's criteria. The remaining 109 cases were analysed in two groups: one that received intratympanic corticosteroid salvage therapy (treatment group) and one that did not (control group). The recovery was analysed after 6 months and 2 years of follow-up.The difference between each group at baseline were not statistically significant. After systemic treatment for 7 days, PTA in the control group was 53.13dB and 66.11dB in the treatment group (P.01). After 6 months, the mean PTA improvement was 10.84dB in the treatment group, and 1.13dB in the control group, a significant difference (P.0001). Only 10 cases achieved full hearing recovery after intratympanic corticosteroid salvage therapy, none of the patients did so in the control group.Intratympanic corticosteroid rescue for ISSHL acheived hearing improvement for the cases with failure of initial systemic corticosteroid treatment. However, this treatment did not provide complete hearing recovery according to Siegel's criteria in most cases.