Scalar Localization Cochlear Electrode Array Using 64 Slice CT

Mayo Clinic5 enrolled

Overview

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.

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.

Study Type

OBSERVATIONAL

Enrollment

Conditions

Hearing Loss

Eligibility

Sex: ALLMin age: 8 YearsMax age: 100 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Registered in the Cochlear Implant Database. * Patient has short or long electrode cochlear implant for high frequency hearing loss. Exclusion Criteria: * Inability to provide consent. * Patients with underlying otospongiosis, extensive labyrinthitis ossificans or cochlear dysplasia. (These patients would have been identified with pre-operative imaging prior to cochlear implantation).

Locations (1)

Mayo Clinic

Rochester, Minnesota, United States

Outcomes

Primary Outcomes

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

Secondary Outcomes

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

Data from ClinicalTrials.gov

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