Electric charge requirements of pediatric cochlear implant recipients enrolled in the Childhood Development After Cochlear Implantation study.

Journal Article (Journal Article;Multicenter Study)

OBJECTIVE: To evaluate mapping characteristics of children with cochlear implants who are enrolled in the Childhood Development After Cochlear Implantation (CDACI) multicenter study. STUDY DESIGN: Longitudinal evaluation during 24 months of speech processor maps of children with cochlear implants prospectively enrolled in the study. SETTING: Six tertiary referral centers. SUBJECTS: One hundred eighty-eight children enrolled in the CDACI study who were 5 years old or younger at the time of enrollment. Of these children, 184 received unilateral implants, and 4 received simultaneous bilateral implants. INTERVENTION: Children attended regular mapping sessions at their implant clinic as part of the study protocol. Maps were examined for each subject at 4 different time intervals: at device activation and 6, 12, and 24 months postactivation. MAIN OUTCOME MEASURES: Mean C/M levels (in charge per phase) were compared for 4 different time intervals, for 3 different devices, for 6 different implant centers, and for children with normal and abnormal cochleae. RESULTS: All 3 types of implant devices demonstrate significant increases in C/M levels between device activation and the 24-month appointment. Significant differences in mean C/M levels were noted between devices. Children with cochlear anomalies demonstrate significantly greater C/M levels than children with normal cochleae. CONCLUSION: The CDACI study has enabled us to evaluate the mapping characteristics of pediatric patients who use 3 different devices and were implanted at a variety of implant centers. Analysis of such data enables us to better understand the mapping characteristics of children with cochlear implants.

Full Text

Duke Authors

Cited Authors

  • Zwolan, TA; O'Sullivan, MB; Fink, NE; Niparko, JK; CDACI Investigative Team,

Published Date

  • February 2008

Published In

Volume / Issue

  • 29 / 2

Start / End Page

  • 143 - 148

PubMed ID

  • 18223443

International Standard Serial Number (ISSN)

  • 1531-7129

Digital Object Identifier (DOI)

  • 10.1097/MAO.0b013e318161aac7


  • eng

Conference Location

  • United States