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Electrocochleography and Cochlear Implantation: A Systematic Review.

Eleonora M C Trecca1,2, William J Riggs1, Jameson K Mattingly1

  • 1Department of Otolaryngology-Head & Neck Surgery, The Ohio State University Wexner Medical Center, Columbus, Ohio.

Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [And] European Academy of Otology and Neurotology
|May 19, 2020
PubMed
Summary

Electrocochleography (ECochG) is valuable for cochlear implantation (CI) stages, particularly hearing preservation. This review details ECochG

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Area of Science:

  • Audiology
  • Neurosurgery
  • Otolaryngology

Background:

  • Cochlear implantation (CI) is a complex procedure with varied outcomes.
  • Electrocochleography (ECochG) offers electrophysiological insights but its role in CI is not systematically reviewed.
  • Understanding ECochG's utility across CI phases is crucial for optimizing patient care.

Purpose of the Study:

  • To systematically review and analyze the applications of electrocochleography (ECochG) throughout the different stages of cochlear implantation (CI).
  • To consolidate current knowledge on ECochG's role in CI, addressing the heterogeneity in existing literature.

Main Methods:

  • A comprehensive literature search was conducted on PubMed and cross-references from inception to December 8, 2019.
  • Keywords included "Cochlear Implant" OR "Cochlear Implantation" AND "Electrocochleography" OR "ECochG."
  • English-language articles focusing on ECochG in CI phases were included; reviews, editorials, and case reports were excluded. Study quality was assessed using the STROBE Statement.

Main Results:

  • Sixty papers published between 2003 and 2019 were included, comprising 46 human studies and 12 animal studies.
  • ECochG applications were categorized into diagnostic (11 papers), intraoperative monitoring (43 papers), and follow-up testing (10 papers).
  • Hearing preservation was the most frequently addressed topic (25 papers), highlighting ECochG's significance in this area.

Conclusions:

  • Electrocochleography (ECochG) measurements demonstrate significant utility across various aspects of cochlear implantation (CI), notably in hearing preservation.
  • This review provides the first comprehensive overview of ECochG's evolution and advancements in CI, from early research to modern signal processing and device integration.
  • The findings underscore the value of ECochG in enhancing CI outcomes and surgical techniques.