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van de Berg R, Lucieer F, Guinand N, et al. The Vestibular Implant: Hearing Preservation during Intralabyrinthine Electrode Insertion-A Case Report. Front Neurol. 2017;8:137doi: 10.3389/fneur.2017.00137.
van de Berg, R., Lucieer, F., Guinand, N., van Tongeren, J., George, E., Guyot, J. P., Kingma, H., van Hoof, M., Temel, Y., van Overbeeke, J., Perez-Fornos, A., & Stokroos, R. (2017). The Vestibular Implant: Hearing Preservation during Intralabyrinthine Electrode Insertion-A Case Report. Frontiers in neurology, 8137. https://doi.org/10.3389/fneur.2017.00137
van de Berg, Raymond, et al. "The Vestibular Implant: Hearing Preservation during Intralabyrinthine Electrode Insertion-A Case Report." Frontiers in neurology vol. 8 (2017): 137. doi: https://doi.org/10.3389/fneur.2017.00137
van de Berg R, Lucieer F, Guinand N, van Tongeren J, George E, Guyot JP, Kingma H, van Hoof M, Temel Y, van Overbeeke J, Perez-Fornos A, Stokroos R. The Vestibular Implant: Hearing Preservation during Intralabyrinthine Electrode Insertion-A Case Report. Front Neurol. 2017 Apr 10;8:137. doi: 10.3389/fneur.2017.00137. eCollection 2017. PMID: 28443060; PMCID: PMC5385458.
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Front Neurol. 2017 Apr 10;8:137. doi: 10.3389/fneur.2017.00137. eCollection 2017.

The Vestibular Implant: Hearing Preservation during Intralabyrinthine Electrode Insertion-A Case Report.

Frontiers in neurology

Raymond van de Berg, Florence Lucieer, Nils Guinand, Joost van Tongeren, Erwin George, Jean-Philippe Guyot, Herman Kingma, Marc van Hoof, Yasin Temel, Jacobus van Overbeeke, Angelica Perez-Fornos, Robert Stokroos

Affiliations

  1. Department of Otorhinolaryngology and Head and Neck Surgery, Maastricht University Medical Center, Maastricht, Netherlands.
  2. Faculty of Physics, Tomsk State University, Tomsk, Russia.
  3. Service of Otorhinolaryngology and Head and Neck Surgery, Department of Clinical Neurosciences, Geneva University Hospitals, Geneva, Switzerland.
  4. Department of Neurosurgery, Maastricht University Medical Center, Maastricht, Netherlands.

PMID: 28443060 PMCID: PMC5385458 DOI: 10.3389/fneur.2017.00137

Abstract

OBJECTIVE: The vestibular implant seems feasible as a clinically useful device in the near future. However, hearing preservation during intralabyrinthine implantation remains a challenge. It should be preserved to be able to treat patients with bilateral vestibulopathy and (partially) intact hearing. This case study investigated the feasibility of hearing preservation during the acute phase after electrode insertion in the semicircular canals.

METHODS: A 40-year-old woman with normal hearing underwent a translabyrinthine approach for a vestibular schwannoma Koos Grade IV. Hearing was monitored using auditory brainstem response audiometry (ABR). ABR signals were recorded synchronously to video recordings of the surgery. Following the principles of soft surgery, a conventional dummy electrode was inserted in the lateral semicircular canal for several minutes and subsequently removed. The same procedure was then applied for the posterior canal. Finally, the labyrinthectomy was completed, and the schwannoma was removed.

RESULTS: Surgery was performed without complications. No leakage of endolymph and no significant reduction of ABR response were observed during insertion and after removal of the electrodes from the semicircular canals, indicting no damage to the peripheral auditory function. The ABR response significantly changed when the semicircular canals were completely opened during the labyrinthectomy. This was indicated by a change in the morphology and latency of peak V of the ABR signal.

CONCLUSION: Electrode insertion in the semicircular canals is possible without acutely damaging the peripheral auditory function measured with ABR, as shown in this proof-of-principle clinical investigation.

Keywords: bilateral vestibular areflexia; bilateral vestibulopathy; electrode design; hearing preservation; neural prosthesis; vestibular implant; vestibular prosthesis; vestibulo-ocular reflex

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