Neural response telemetry results with the nucleus 24 contour in a perimodiolar position.
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.


METHODS
Prospective study.


METHODS
Tertiary referral center.


METHODS
Twelve patients (23-72 years old) undergoing cochlear implantation, using the Nucleus 24 Contour implant, secondary to congenital and age-related hearing loss.


METHODS
Cochlear implantation with Cochlear Nucleus 24 Contour implant.


METHODS
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.


CONCLUSIONS
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.
Seidman
Michael D
MD
Department of Otolaryngology-Head and Neck Surgery, Henry Ford Medical Center, Detroit, Michigan 48323, USA. mseidma1@hfhs.org
Vivek
Prashant
P
Dickinson
William
W
D000200:Action Potentials; D000328:Adult; D000368:Aged; D003054:Cochlear Implants; D003056:Cochlear Nerve / Q000503:physiopathology*; D017626:Cochlear Nucleus / Q000601:surgery*; D004056:Differential Threshold; D004867:Equipment Design; D034381:Hearing Loss / Q000151:congenital / Q000503:physiopathology* / Q000601:surgery*; D006801:Humans; D008875:Middle Aged; D011304:Presbycusis / Q000503:physiopathology / Q000601:surgery; D011446:Prospective Studies; D013686:Telemetry