Exploring the Use of ECochG Testing During Electrode Insertion in Cochlear Implant Surgery

Launched by CAMBRIDGE UNIVERSITY HOSPITALS NHS FOUNDATION TRUST · Jan 16, 2019

Keywords

ClinConnect Summary

Cochlear implant candidature has changed in the past years. Today many cochlear implant recipients have some low frequency residual hearing in the ear which is to be implanted. To help preserve hearing, the electrode array must be inserted extremely carefully. It is desirable to have real-time feedback relating to progress of the electrode insertion.

One possible tool that might provide this is an electrocochleography (ECochG). A brief low-frequency acoustic tone at a fixed level is delivered to the external ear canal. This results in normal movements of the outer and the inner hair cells ...

Gender

ALL

Eligibility criteria

• Inclusion Criteria:
• • Patients between ages of 12 months to 6 years old, and Adults over 18 years old
• • Meets normal candidacy requirements for cochlear implantation
• • Advanced Bionics (AB) implant has been selected for patient at MDT
• • Patient has capacity to consent
• • Patent cochlea as verified by CT or MRI scan
• • No cochlear abnormality that might prevent insertion of the electrode array
• • Measurable residual hearing in the ear to be implanted
• • No additional handicap that would prevent study procedures being followed
• • Agreement to participate in the study
• Exclusion Criteria:
• • Complex cases where minimal duration of surgery is required. Although ECochG adds less than 10 minutes to the surgery time.
• • Patients lacking the capacity to consent