Electric charge requirements of pediatric cochlear implant recipients enrolled in the childhood development after cochlear implantation study

Teresa A. Zwolan, Mary Beth O'Sullivan, Nancy E. Fink, John K. Niparko, Laurie Eisenberg, William Luxford, Karen Johnson, Amy Martinez, Jean DesJardin, Leslie Visser-Dumont, Sophie Ambrose, Carren Stika, Melinda Gillinger, John Niparko, Jill Chinnici, Howard Francis, Steve Bowditch, Jennifer Yeagle, Courtney Carver, Andrea MarloweAndrea Gregg, Jennifer Gross, Rick Ostrander, Nancy Mellon, Jennifer Mertes, Mary O.Leary Kane, Annelle Hodges, Thomas Balkany, Alina Lopez, Leslie Goodwin, Teresa Zwolan, Anita Vereb, Caroline Arnedt, Holly F.B. Teagle, Carolyn J. Brown, Craig A. Buchman, Carlton Zdanski, Hannah Eskridge, Emily Tobey, Andrea Warner-Czyz, Deborah Rekart, Carol Cokely, Nicole Weissner, Angela Boyd, Alexandra Quittner, Ivette Cruz, David Barker, Nancy Fink, Nae Yuh Wang, Daniel Habtemariam, Thelma Vilche, Patricia Bayton

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)143-148
Number of pages6
JournalOtology and Neurotology
Issue number2
StatePublished - Feb 2008
Externally publishedYes


  • C level
  • Cochlear implant
  • Electric charge
  • Mapping
  • Pediatric

ASJC Scopus subject areas

  • Otorhinolaryngology
  • Sensory Systems
  • Clinical Neurology


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