Scalar Localization Cochlear Electrode Array Using 64 Slice CT
Insertion of electrode array in scala vestibuli, rather than the preferred location within scala tympani, leads to loss of native hearing in those patients with isolated high-frequency hearing loss undergoing cochlear implantation.
|Study Design:||Observational Model: Cohort
Time Perspective: Prospective
|Official Title:||Scalar Localization of Cochlear Implant Electrode Array in Hearing Preservation Patients Using 64 Slice CT|
- The aim of our study is to determine surgical placement of the short electrode of cochlear implants in patients with high frequency loss. [ Time Frame: Two years ] [ Designated as safety issue: No ]
- Determine the surgical placement in patients with high frequency who had long electrode array insertions because they did not meet audiometric criteria for short array devices. [ Time Frame: Two Years ] [ Designated as safety issue: No ]
|Study Start Date:||October 2006|
|Study Completion Date:||September 2009|
|Primary Completion Date:||September 2009 (Final data collection date for primary outcome measure)|
Two pediatric participants with high frequency hearing loss post cochlear implant with either long or short electrode array.
Eight participants with high frequency hearing loss post cochlear implant with either short or long electrode array.
Fifteen participants from the existing Cochlear Implant data base.
We aim to determine the surgical placement in patients with high frequency who had long electrode array insertions because they did not meet audiometric criteria for short array devices.
From this basis we will be able to determine if suboptimal insertion (e.g., in the scala vestibuli) leads to loss of low-frequency hearing in these patients. We also will look at the possibilities of using this data in predicting outcomes, modifying implant design, and perfecting surgical technique.