What is it about?
Over the last years, in doubt of cochlear implant (CI) candidacy, assessment of excitability of the auditory nerve is performed with pre-operative tests. These tests are the pre-operative (pre-op.) performed electrical auditory brainstem (EABR) and the late response (EALR) recorded with trans-tympanic promontory stimulation in local anesthesia.
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Why is it important?
But in some cases after such preoperative tests there is still doubt about the excitability of the auditory pathway. The most reliable EABR is recorded with using stimulation via the CI. However, before CI implantation,, an intra-cochlear test electrode could be used in order to achieve similar EABR results.
Perspectives
Intra-op. EABR using test electrode was easy to record and it shows similar results to EABR using CI stimulation. Intra-op. EABR using test electrode may help in confirming the results of not clear preop. EABR with a minimal increase in recording time.
Daniel Polterauer
Ludwig-Maximilians-Universitat Munchen
Read the Original
This page is a summary of: Intra-operative test electrode and electrical auditory brainstem response after preoperative assessment in cochlear implant candidacy, Current Directions in Biomedical Engineering, September 2023, De Gruyter,
DOI: 10.1515/cdbme-2023-1182.
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