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Related Experiment Video

Updated: Feb 11, 2026

Electrically Evoked Stapedius Reflex Measurements in Cochlear Implantation and Its Application in the Postoperative Fitting Process
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Surgical timing for bilateral simultaneous cochlear implants: When is best?

Sebastiano Franchella1, Roberto Bovo1, Luigia Bandolin1

  • 1Department of Neurosciences, Otolaryngology Section, University of Padua, Padua, Italy.

International Journal of Pediatric Otorhinolaryngology
|May 6, 2018
PubMed
Summary
This summary is machine-generated.

The optimal age for simultaneous bilateral cochlear implantation (CI) in children is between 12 and 24 months. Early implantation before 1 year offers no significant advantage and may increase risks.

Keywords:
AudiometricBilateralCochlearImplantSimultaneousSpeechSurgeryTiming

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Area of Science:

  • Pediatric Otolaryngology
  • Audiology
  • Neuroscience

Background:

  • Congenital hearing loss affects 1-2 per 1000 newborns, necessitating early diagnosis and intervention.
  • Delayed intervention can lead to impaired auditory pathway development and language acquisition.
  • Bilateral cochlear implants (CIs) offer binaural hearing benefits, including improved sound localization and speech discrimination.

Purpose of the Study:

  • To determine the optimal age for simultaneous bilateral cochlear implantation in pediatric patients.
  • To evaluate the impact of implantation age on audiometric and speech outcomes.

Main Methods:

  • Observational, retrospective, monocentric study.
  • Included 49 pediatric patients (<18 years) receiving simultaneous bilateral CIs.
  • Audiometric and speech tests performed at 3, 6, 12 months post-activation and at 2 years of age.

Main Results:

  • Bilateral implantation before 2 years of age resulted in satisfactory audiometric performance.
  • No significant audiometric benefits were observed for implantation before 1 year of age.
  • No significant correlation found between earlier implantation age (before 2.5 years) and improved speech outcomes.

Conclusions:

  • The optimal age for simultaneous bilateral CI surgery is between 12 and 24 months.
  • Implantation before 1 year of age showed no particular benefits and may increase risks.
  • This age range balances potential benefits with reduced risks of diagnostic errors and surgical complications in young children.