2018 CSO General Scientific Program

“The Utility of A Cochlear Duct Length Measurement Software For Pre-Operative Cochlear Implant Selection”

John JW Lee, Matthew G Crowson, Maya A Kuroiwa, David Schipp, Trung N Le, Joseph M Chen, Vincent Y Lin

Abstract

Objectives

  1. Describe the benefits of using a patient-specific electrode array for the enhancement of speech recognition in cochlear implant (CI) patients
  2. Evaluate the utility of a cochlear duct length (CDL) measurement software for pre-operative CI electrode selection on intra-operative and speech recognition outcomes.

Methods

A retrospective review was performed of patients receiving a Med-El CI with pre-operative CDL measurements using a proprietary software. Complete electrode insertion rates and speech recognition scores were compared with a matched control group of patients receiving a CI. 

Results

29 patients had CDL measurements computed pre-operatively prior to electrode array selection. Four (7.3%) patients without pre-operative CDL measurement had incomplete array insertion versus 1 (3.4%) who had CDL measurements (p > 0.05).  HINT, AzBio and CNC scores at 3/6 months are currently being compared. 

Conclusions

Electrode insertion depth is an important factor in optimal tonotopic stimulation in patients receiving CIs. Computer-assisted planning to personalize electrode selection via CDL shows promise in reducing the number of incomplete insertions, warranting further study with larger sample sizes.

 

Learning Objectives

  1. Describe the benefits of using a patient-specific electrode array for the enhancement of speech recognition in cochlear implant (CI) patients
  2. Evaluate the utility of a cochlear duct length (CDL) measurement software for pre-operative CI electrode selection on intra-operative and speech recognition outcomes.

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Scheduling Details

This 7 minute presentation is scheduled to take place on June 4, 2019 at 11:00 in the Salon 8.

Authors' Contact Details

Corresponding Author: Dr. John JW Lee

Senior Author: Dr. Vincent Y Lin

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