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Author Spotlight: Advancements in Impedance Monitoring for Cochlear Implant Surgery
Published on: August 4, 2023
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Surgical Experience in Pre-Operative Measurement of Cochlear Duct Length in Cochlear Implant Surgery
Chien Ying Vincent Ngu1, Ing Ping Tang2, Prepageran Narayanan3
1Department of Otorhinolaryngology, Sarawak General Hospital, Kuching, Sarawak Malaysia.
Summary
Accurate cochlear duct length measurement using OTOPLAN software ensures optimal cochlear implant electrode selection. This improves hearing restoration for individuals with severe to profound sensorineural hearing loss.
Area of Science:
- Otolaryngology
- Biomedical Engineering
- Neurosurgery
Background:
- Cochlear implant surgery restores hearing in severe to profound sensorineural hearing loss.
- Individual cochlear size variations necessitate precise electrode selection for optimal pitch detection.
- Traditional electrode lengths may not suit all patients, risking insertion injury.
Purpose of the Study:
- To evaluate the efficacy of OTOPLAN software for measuring cochlear duct length (CDL) prior to cochlear implant surgery.
- To determine the optimal cochlear electrode size based on individual CDL measurements.
- To enhance pre-operative planning for cochlear implant procedures.
Main Methods:
- Utilized computed tomography (CT) scans of the cochlea.
- Employed validated OTOPLAN software for indirect CDL measurement and cochlear morphology analysis.
- Recruited 30 patients (age 2-76) undergoing cochlear implant surgery over 3 years.
Main Results:
- Average patient CDL was 33.5 mm (range 30.1-36.0 mm).
- The majority of patients received a 28 mm electrode.
- Implanted electrodes covered an average of 83% (77.8-92.7%) of the cochlear duct.
Conclusions:
- Accurate pre-operative measurement of cochlear anatomy is crucial for appropriate electrode selection.
- OTOPLAN software facilitates precise CDL assessment, enabling optimized cochlear implant surgery.
- Individualized pre-operative planning enhances outcomes in cochlear implant recipients.
