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Related Experiment Video

Updated: Jan 29, 2026

Electrically Evoked Stapedius Reflex Measurements in Cochlear Implantation and Its Application in the Postoperative Fitting Process
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Bilateral Cochlear Implants Using Two Electrode Lengths in Infants With Profound Deafness.

Camille C Dunn1, Elizabeth A Walker2, Stephanie Gogel1

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Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [And] European Academy of Otology and Neurotology
|February 12, 2019
PubMed
Summary
This summary is machine-generated.

A short electrode and standard electrode may offer an option for infants with profound deafness, preserving inner ear structures. Performance was comparable to bilateral standard implants, though ear asymmetry warrants further study.

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Area of Science:

  • Otolaryngology
  • Audiology
  • Biomedical Engineering

Background:

  • Congenital profound deafness in infants presents challenges for preserving inner ear structures during cochlear implantation.
  • Exploring novel electrode configurations is crucial for optimizing auditory outcomes and anatomical preservation.

Purpose of the Study:

  • To evaluate the efficacy of a combined short and standard electrode implantation in infants with congenital profound deafness.
  • To assess auditory performance and compare outcomes between the short and standard electrodes, as well as against bilateral standard electrodes.

Main Methods:

  • A repeated-measure, single-subject experimental design was employed.
  • Nine infants with congenital profound bilateral sensorineural hearing loss received short and standard implants.
  • Auditory and language assessments included the Early Speech Perception test, Children's Vowel, PB-K word test, and Preschool Language Scales-3.

Main Results:

  • Early Speech Perception scores reached ceiling effects, indicating robust performance.
  • Significant differences in word recognition (PB-K) were observed between the short and standard electrodes (p < 0.001).
  • No significant performance differences were found when comparing bilateral outcomes to age-matched controls with bilateral standard electrodes (p = 0.321).

Conclusions:

  • Combined short and standard electrode implantation may offer a viable option for preserving cochlear anatomy in infants.
  • Further research is necessary to investigate the reasons behind observed performance asymmetries between ears.