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  • Title: Developmental, audiological, and speech perception functioning in children after cochlear implant surgery.
    Author: Pulsifer MB, Salorio CF, Niparko JK.
    Journal: Arch Pediatr Adolesc Med; 2003 Jun; 157(6):552-8. PubMed ID: 12796235.
    Abstract:
    OBJECTIVES: To examine changes in audiological, speech perception, and developmental functioning subsequent to cochlear implantation in children with severe to profound hearing impairment, and to identify factors related to those changes. DESIGN: Prospective, longitudinal analysis to compare functioning of pediatric patients who underwent cochlear implantation before and 1 year after surgery. SETTING: Outpatient pediatric cochlear implantation program in an academic institution (The Listening Center, The Johns Hopkins University School of Medicine, Baltimore, Md). Patients Forty consecutive pediatric patients between 1(1/2) and 9 years of age who received a cochlear implant between April 1, 1996, and August 31, 1998, and who also underwent psychological, audiological, and speech perception evaluations immediately before and 1 year after implantation. MAIN OUTCOME MEASURE: Scores on the Bayley Scales of Infant Development-Second Edition, Stanford-Binet Intelligence Scale-Fourth Edition, Developmental Profile II, Child Behavior Checklist, speech perception categories, and audiological pure-tone thresholds. RESULTS: Mean (SD) duration of hearing impairment was 37.78 (27.94) months, mean (SD) age at surgery was 50.72 (27.66) months. Significant improvements were found 1 year after surgery in audiological, speech perception, and developmental functioning, but not in nonverbal intelligence or behavior. Greater benefits in audiological and developmental functioning were associated with younger age (<48 months) at implantation. CONCLUSIONS: Patients showed significant improvement in audiological status, overall developmental functioning, and speech perception skills in a short time after surgery. Greatest improvement in speech perception was for children with the least initial impairment, and greatest developmental gains were associated with young age at implantation.
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