en
Scientific article
Open access
English

The modified ampullar approach for vestibular implant surgery: feasibility and its first application in a human with a long-term vestibular loss

Published inFrontiers in neurology, vol. 3, 18
Publication date2012
Abstract

Objective: To assess, for the first time in a human with a long-term vestibular loss, a modified approach to the ampullae and the feasibility of evoking a VOR by ampullar stimulation. Materials and methods: Peroperative stimulation of the ampullae, using the ampullar approach, was performed under full anesthesia during cochlear implantation in a 21-year-old female patient, who had experienced bilateral vestibular areflexia and sensorineural hearing loss for almost 20 years. Results: The modified ampullar approach was performed successfully with as minimally invasive surgery as possible. Ampullar stimulation evoked eye movements containing vectors congruent with the stimulated canal. As expected, the preliminary electrophysiological data were influenced by the general anesthesia, which resulted in current spread and reduced maximum amplitudes of eye movement. Nevertheless, they confirm the feasibility of ampullar stimulation. Conclusion: The modified ampullar approach provides safe access to the ampullae using as minimally invasive surgery as possible. For the first time in a human with long-term bilateral vestibular areflexia, it is shown that the VOR can be evoked by ampullar stimulation, even when there has been no vestibular function for almost 20 years. This approach should be considered in vestibular surgery, as it provides safe access to one of the most favorable stimulus locations for development of a vestibular implant.

Citation (ISO format)
VAN DE BERG, Raymond et al. The modified ampullar approach for vestibular implant surgery: feasibility and its first application in a human with a long-term vestibular loss. In: Frontiers in neurology, 2012, vol. 3, p. 18. doi: 10.3389/fneur.2012.00018
Main files (1)
Article (Published version)
accessLevelPublic
Identifiers
ISSN of the journal1664-2295
526views
278downloads

Technical informations

Creation12/11/2013 3:53:00 PM
First validation12/11/2013 3:53:00 PM
Update time03/14/2023 8:44:16 PM
Status update03/14/2023 8:44:16 PM
Last indexation01/16/2024 8:33:32 AM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack