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Neural response telemetry results with the nucleus 24 contour in a perimodiolar position
Michael D Seidman1, Prashant Vivek, William Dickinson
1Department of Otolaryngology-Head and Neck Surgery, Henry Ford Medical Center, Detroit, Michigan 48323, USA. mseidma1@hfhs.org
Objective:
The purpose of the study was to analyze changes in neural response telemetry using the Cochlear Nucleus 24 Contour before and after stylet removal in a human model.
Study Design:
Prospective study.
Setting:
Tertiary referral center.
Patients:
Twelve patients (23-72 years old) undergoing cochlear implantation, using the Nucleus 24 Contour implant, secondary to congenital and age-related hearing loss.
Intervention:
Cochlear implantation with Cochlear Nucleus 24 Contour implant.
Main Outcome Measure:
Neural response telemetry thresholds were recorded initially with the stylet in and then with the stylet out during the implant procedure.
Results:
Stimulus levels to obtain neural response telemetry threshold after stylet removal were statistically lower after the stylet was removed.
Conclusion:
The Nucleus 24 Contour achieves a perimodiolar position once the stylet is removed, and this leads to reduction in the current required to elicit a threshold neural response telemetry response.
