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Cochlear implantation in children with internal ear malformations.

N Loundon1, I Rouillon, N Munier

  • 1ENT Department, Armand Trousseau Children's Hospital, Paris, France. natalie.loundon@trs.ap-hop-paris.fr

Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [And] European Academy of Otology and Neurotology
|July 15, 2005
PubMed
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Cochlear implantation in children with inner ear malformations showed good surgical outcomes and variable hearing and speech results. Progressive deafness generally leads to better outcomes than congenital deafness.

Area of Science:

  • Otolaryngology
  • Pediatric Audiology
  • Neurosurgery

Background:

  • Inner ear malformations present unique challenges for cochlear implantation.
  • Understanding surgical aspects and outcomes is crucial for managing hearing loss in these children.

Purpose of the Study:

  • To evaluate the surgical techniques and clinical outcomes of cochlear implantation in pediatric patients with inner ear malformations.
  • To compare results between children with progressive versus congenital deafness.

Main Methods:

  • Retrospective cohort study of 18 children with inner ear malformations undergoing cochlear implantation.
  • Surgical complications, word recognition (CSW, OSW), and speech production were assessed.
  • Patients were categorized into progressive (G1) and congenital (G2) deafness groups.

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Main Results:

  • No major surgical complications like facial injury or infection were observed; 50% experienced intraoperative gusher.
  • Significant improvements in word recognition (CSW) were noted post-implantation (83% vs 16%).
  • Good oral language development was achieved by 76% at 2 years, with better outcomes in the progressive deafness group (G1).

Conclusions:

  • Cochlear implantation is surgically safe in children with inner ear malformations.
  • Perceptive and linguistic outcomes are variable, influenced by the type and onset of deafness.
  • Progressive deafness is associated with more favorable outcomes compared to congenital deafness.