Clinical Trial: Scalar Localization Cochlear Electrode Array Using 64 Slice CT

Study Status: Completed
Recruit Status: Completed
Study Type: Observational

Official Title: Scalar Localization of Cochlear Implant Electrode Array in Hearing Preservation Patients Using 64 Slice CT

Brief Summary: 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.

Detailed Summary:

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.

Sponsor: Mayo Clinic

Current Primary Outcome: 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 ]

Original Primary Outcome: Same as current

Current Secondary Outcome: 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 ]

Original Secondary Outcome: Same as current

Information By: Mayo Clinic

Dates:
Date Received: December 21, 2007
Date Started: October 2006
Date Completion:
Last Updated: December 30, 2015
Last Verified: September 2009