RESUMEN
Introduction: While cochlear implants (CI) prior to 12 months of age have become common, the prevalence and impact of issues that either arise or were not evident prior to implantation is unknown. Methods: Retrospective chart review of children implanted under 12 months of age with minimum 3 years follow up. The children were divided into three groups: those with no identified additional disabilities, those with no known disabilities at time of implantation but diagnosed with additional disabilities following implantation, and those that had known anticipated additional disabilities at time of implantation. Results: 108 children under the age of 12 months were implanted at our Center between 2000 and 2013 with an average age of 9 months at time of implantation and n = 93 met inclusion criteria. In 79.6% (74/93) of children, there were no additional issues detected. In 11.8% (11/93), additional issues were known at the time of implantation while in 8.6% (8/93) of the children were diagnosed with additional issues that were not evident prior to implantation. The auditory and linguistic benefits vary commensurate with the severity of their disabilities. Those with anticipated issues preoperatively did not perform as well. Conclusions: Children implanted below one year of age but diagnosed with additional disabilities following implantation obtained substantial though varying degrees of benefit. In none of these cases would knowledge of the disability have altered the decision to offer early CI. It is important to address these potential issues when counseling families about outcomes.
Asunto(s)
Implantación Coclear/estadística & datos numéricos , Discapacidades del Desarrollo/epidemiología , Pérdida Auditiva Sensorineural/cirugía , Enfermedades no Diagnosticadas/epidemiología , Diagnóstico Tardío , Discapacidades del Desarrollo/complicaciones , Discapacidades del Desarrollo/diagnóstico , Femenino , Pérdida Auditiva Sensorineural/complicaciones , Humanos , Lactante , Masculino , Periodo Posoperatorio , Prevalencia , Estudios Retrospectivos , Resultado del Tratamiento , Enfermedades no Diagnosticadas/complicaciones , Enfermedades no Diagnosticadas/diagnósticoRESUMEN
OBJECTIVES: The auditory experience of early deafened pediatric cochlear implant (CI) users is different from that of postlingually deafened adult CI users due to disparities in the developing auditory system. It is therefore expected that the auditory psychophysical capabilities between these two groups would differ. In this study, temporal resolving ability was investigated using a temporal modulation detection task to compare the performance outcomes between these two groups. DESIGN: The minimum detectable modulation depth of amplitude modulated broadband noise at 100âHz was measured for 11 early deafened children with a CI and 16 postlingually deafened adult CI users. RESULTS: Amplitude modulation detection thresholds were significantly lower (i.e., better) for the pediatric CI users than for the adult CI users. Within each group, modulation detection thresholds were not significantly associated with chronologic age, age at implantation, or years of CI experience. CONCLUSIONS: Early implanted children whose auditory systems develop in response to electric stimulation demonstrate better temporal resolving abilities than postlingually deafened adult CI users. This finding provides evidence to suggest that early implanted children might benefit from sound coding strategies emphasizing temporal information.