What is it about?

Subjective promontory stimulation is used to evaluate cochlear implant (CI) candidacy, but the test reliability is low. Electrically evoked auditory brainstem response (EABR) can verify the function of the auditory system objectively. This study’s procedure uses a trans-tympanic rounded bent-tip electrode to perform pre-operative EABR under local anaesthesia (LA-TT-EABR) using MED-EL Software and Hardware.

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Why is it important?

This study aimed to determine this pre-operative objective test in local anesthesia usability and effectiveness for CI candidates. LA-TT-EABR is a tool in the frame of pre-operative objective testing the auditory pathway. It seems useful for clinical testing CI candidacy. Based on this study’s outcomes, LA-TT-EABR should be recommended for uncertain CI candidates.


This article is a basis for an established method in general anesthesia now shown in local anesthesia. In addition, other hardware setup needs to be checked in the future and also other meaurements like cortical responses and correlation to subjective hearing feeling of the patients.

Daniel Polterauer
Ludwig-Maximilians-Universitat Munchen

Read the Original

This page is a summary of: Evaluation of auditory pathway excitability using a pre-operative trans-tympanic electrically evoked auditory brainstem response under local anesthesia in cochlear implant candidates, International Journal of Audiology, August 2022, Taylor & Francis,
DOI: 10.1080/14992027.2022.2114024.
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