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[Intraoperative audiological-technical diagnostics during cochlear implant surgery].

T Wesarg1, S Arndt, A Aschendorff

  • 1Universitätsklinik für Hals-, Nasen- und Ohrenheilkunde und Poliklinik, Universitätsklinikum Freiburg, Killianstr. 5, 79106, Freiburg, Deutschland, thomas.wesarg@uniklinik-freiburg.de.

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Summary
This summary is machine-generated.

Cochlear implant surgery requires audiological-technical diagnostics to check implant function and auditory nerve coupling. This ensures timely interventions by assessing electronic and electrode function, and nerve response.

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Area of Science:

  • Otolaryngology
  • Biomedical Engineering
  • Neuroscience

Context:

  • Cochlear implant (CI) surgery necessitates intraoperative audiological-technical diagnostics.
  • These diagnostics verify both the technical integrity of the CI device and its physiological connection to the auditory nerve.
  • This verification is crucial for performing necessary surgical adjustments before the procedure concludes.

Purpose:

  • To outline the essential audiological-technical diagnostic procedures during cochlear implant surgery.
  • To detail the methods for assessing implant electronics, electrode function, and neural integrity.
  • To emphasize the importance of these diagnostics for successful cochlear implantation.

Summary:

  • Technical assessment includes coupling checks, implant integrity tests, and impedance/field telemetry to evaluate electronics and electrodes.
  • Physiological assessment involves registering electrically evoked stapedius reflexes and measuring electrically evoked compound action potentials (eCAPs) from the cochlear nerve.
  • Stimulation thresholds for eCAPs are measured to confirm neural excitability and proper function.

Impact:

  • Ensures optimal cochlear implant performance and patient outcomes.
  • Facilitates immediate intraoperative adjustments, reducing the need for secondary interventions.
  • Contributes to the understanding and refinement of audiological monitoring techniques in neurosurgery.