Outcome of cochlear implantation at different ages from 0 to 6 years.
2002
Objective: To evaluate the outcome of cochlear implantation in young children in relation to the age at implantation. Study Design: A retrospective longitudinal and cross-sectional analysis of pediatric cochlear implant patients. Patients: All children with congenital deafness who underwent implantation before the age of 6 years (n 48 for the longitudinal analysis and n 70 for the cross-sectional analysis) Interventions: All children received a multichannel cochlear implant. Main Outcome Measures: Categories of Auditory Performance (CAP) score and integration into the mainstream school system. Results: For all children, the CAP score increased after implantation. Implantation beyond the age of 4 years hardly ever resulted in normal CAP scores or in integration into the mainstream primary school (20 to 30% of cases). Implantation between the age of 2 and 4 years always resulted in normal CAP scores after 3 years with a 66% probability of integration into the primary school. Implantation before the age of 2 years always resulted in immediate normalization of the CAP scores, with a 90% probability of integration into the mainstream kindergarten, well before entrance into the primary school. Conclusion: All children with congenital deafness who underwent implantation before the age of 6 years appeared to benefit from the implant. However, these data add evidence to the importance of early implantation (before the age of 2 years). Intervention before the age of 4 years seemed to be critical to avoid irreversible auditory performance losses, and intervention before the age of 2 years seemed to be critical to achieve optimal results. Key Words: Pediatric cochlear implant— Children—Outcome—Integration—Hearling loss—Early intervention. Otol Neurotol 23:885–890, 2002.
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