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Related Experiment Video

Updated: Jul 11, 2025

Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
06:04

Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages

Published on: March 24, 2023

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[The time range in sequential bilateral cochlear implantation].

S B Sugarova1, D S Kliachko1, Ya L Shcherbakova1

  • 1St. Petersburg Research Institute of Ear, Throat, Nose and Speech, St. Petersburg, Russia.

Vestnik Otorinolaringologii
|November 16, 2023
PubMed
Summary
This summary is machine-generated.

Binaural cochlear implantation (CI) is effective even with long intervals between surgeries. A gap exceeding five years does not hinder outcomes in speech understanding and sound localization for bilateral CI patients.

Keywords:
bilateral hearingcochlear implantationhearing and speech rehabilitation

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Area of Science:

  • Otorhinolaryngology
  • Audiology
  • Neurosurgery

Context:

  • Binaural cochlear implantation (CI) offers significant auditory rehabilitation.
  • The impact of extended time intervals between sequential CI surgeries on outcomes is not well-established.
  • This study addresses the efficacy of delayed bilateral CI.

Purpose:

  • To evaluate the effect of the time interval between initial and second cochlear implant surgeries.
  • To compare auditory performance in patients with varying delays between bilateral CI procedures.

Summary:

  • Fifty pediatric patients (10-14 years) were grouped by unilateral CI, bilateral CI with <1 year interval, and bilateral CI with >5 year interval.
  • Speech audiometry in noise, sound localization, and speech development questionnaires were used for comparative analysis.
  • Bilateral CI patients, regardless of the interval between surgeries, demonstrated superior speech intelligibility in noise and sound localization compared to unilateral CI recipients.

Impact:

  • A prolonged interval (over five years) between first and second cochlear implantations is not a contraindication for binaural CI.
  • These findings support the consideration of bilateral CI even in cases with significant delays, potentially improving auditory function and quality of life.