The development of speech perception in children using cochlear implants: effects of etiologic factors and delayed milestones
AuthorPYMAN, BRIAN; Blamey, Peter J.; Lacy, Peter; Clark, Graeme M.; DOWELL, RICHARD
Source TitleAmerican Journal of Otology
Document TypeJournal Article
CitationsPyman, B., Blamey, P. J., Lacy, P., Clark, G. M., & Dowell, R. (2000). The development of speech perception in children using cochlear implants: effects of etiologic factors and delayed milestones. American Journal of Otology, 21, 57-61.
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Hypothesis: Speech perception outcomes for cochlear implantation of children vary over a wide range, and it is hypothesized that central pathologic states associated with certain causes of hearing impairment account for a substantial part of the variance. Study Design: A retrospective analysis was carried out to ascertain the relationships between speech perception, etiologic factors, and central pathologic states as indicated by preoperative delayed motor milestones and/or cognitive delays. Setting: Data were obtained from the pre-and postoperative records of patients attending a hospital cochlear implant clinic. Patients: Results for 75 consecutive patients up to age 5 years who underwent implantation were included in the study. Intervention: Patients received a 22-electrode cochlear prosthesis and were seen by the clinic for regular tune-up and assessments. Home-and school-based habilitation was recommended by the clinic. Main Outcome Measures: Speech perception measures were classified on a five-point scale to allow for different evaluation procedures at different ages and developmental stages. Results: The incidence of motor and cognitive delays were fairly evenly spread across etiologic factors, except for cytomegalovirus, which had a much higher than average incidence. Children with motor and/or cognitive delays were significantly slower than other children in the development of speech perception skills after implantation. Etiologic factors did not have a statistically significant effect on speech perception outcome. Conclusions: It is likely that central pathologic states account for a substantial part of the variance among children using cochlear implants. Specific indicators of central pathologic states should be used to assess a child's prognosis in preference to less specific information based on etiologic factors alone.
Keywordschildren; speech perception; cochlear implants; developmental stages; cytomegalovirus
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- Graeme Clark Collection