[Etiology profile of the patients implanted in the cochlear implant program].

A to investigate the major etiological agents that caused deafness in the studied population is of great relevance to prognostic and treatment purposes and it serves as sampling for future actions in the public health. to check the different hearing impairment etiologies of patients in the cochlear implant program; we studied the etiologies described in order to correlate etiology with age. Longitudinal historical cohort study which analyzed 200 charts from patients submitted to cochlear implantation in the program between August of 2000 and May of 2008.