Vestibular electrode position stability over time.

Autor: Loos E; Department of Otorhinolaryngology-Head and Neck Surgery, Mental Health and Neuroscience (MHeNS), Faculty of Health Medicine and Life Sciences, Maastricht University Medical Center, Maastricht, The Netherlands. Elke.loos@kuleuven.be.; Department of Otorhinolaryngology-Head and Neck Surgery, University Hospitals Leuven, Leuven, Belgium. Elke.loos@kuleuven.be.; Department of Neurosciences, Research Group Experimental Oto-Rhino-Laryngology (ExpORL), KU Leuven, University of Leuven, Leuven, 3000, Belgium. Elke.loos@kuleuven.be., Volpe B; Department of Otorhinolaryngology-Head and Neck Surgery, Mental Health and Neuroscience (MHeNS), Faculty of Health Medicine and Life Sciences, Maastricht University Medical Center, Maastricht, The Netherlands., Vermorken BL; Department of Otorhinolaryngology-Head and Neck Surgery, Mental Health and Neuroscience (MHeNS), Faculty of Health Medicine and Life Sciences, Maastricht University Medical Center, Maastricht, The Netherlands., van Boxel SCJ; Department of Otorhinolaryngology-Head and Neck Surgery, Mental Health and Neuroscience (MHeNS), Faculty of Health Medicine and Life Sciences, Maastricht University Medical Center, Maastricht, The Netherlands., Devocht EMJ; Department of Otorhinolaryngology-Head and Neck Surgery, Mental Health and Neuroscience (MHeNS), Faculty of Health Medicine and Life Sciences, Maastricht University Medical Center, Maastricht, The Netherlands., Stultiens JJA; Department of Otorhinolaryngology-Head and Neck Surgery, Mental Health and Neuroscience (MHeNS), Faculty of Health Medicine and Life Sciences, Maastricht University Medical Center, Maastricht, The Netherlands., Postma AA; Department of Radiology and Nuclear Medicine, Mental Health and Neuroscience (MHeNS), Faculty of Health Medicine and Life Sciences, Maastricht University Medical Center, Maastricht, The Netherlands., Guinand N; Department of Otorhinolaryngology-Head and Neck Surgery, Department of Clinical Neurosciences, Geneva University Hospitals, Geneva, Switzerland., Pérez-Fornos A; Department of Otorhinolaryngology-Head and Neck Surgery, Department of Clinical Neurosciences, Geneva University Hospitals, Geneva, Switzerland., Desloovere C; Department of Otorhinolaryngology-Head and Neck Surgery, University Hospitals Leuven, Leuven, Belgium.; Department of Neurosciences, Research Group Experimental Oto-Rhino-Laryngology (ExpORL), KU Leuven, University of Leuven, Leuven, 3000, Belgium., Verhaert N; Department of Otorhinolaryngology-Head and Neck Surgery, University Hospitals Leuven, Leuven, Belgium.; Department of Neurosciences, Research Group Experimental Oto-Rhino-Laryngology (ExpORL), KU Leuven, University of Leuven, Leuven, 3000, Belgium., van de Berg R; Department of Otorhinolaryngology-Head and Neck Surgery, Mental Health and Neuroscience (MHeNS), Faculty of Health Medicine and Life Sciences, Maastricht University Medical Center, Maastricht, The Netherlands.
Jazyk: angličtina
Zdroj: European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery [Eur Arch Otorhinolaryngol] 2024 Nov 28. Date of Electronic Publication: 2024 Nov 28.
DOI: 10.1007/s00405-024-09098-7
Abstrakt: Objectives: In vestibular implants (VI), the electrode position is thought to be important for optimal neural activation. The objective of this study was to evaluate the stability of the vestibular electrode position over time.
Methods: Seven patients implanted with a VI were followed for one year. When possible, the fenestrations of the semicircular canals were kept very small (approximately 0.8 mm) to stabilize the electrode lead. Additionally, the electrodes were fixed at their fenestration sites using bone cement. A temporal bone CT scan was performed intraoperatively, and one week and one year postoperatively. In one patient reliable analysis of the intraoperative CT scan was not possible due to a technical error. A displacement of the vestibular electrodes of more than 0.5 mm was considered significant.
Results: Fourteen out of 18 electrodes did not show a significant displacement between the intraoperative scan and the first postoperative scan. In the remaining four electrodes, a displacement of ≥ 0.5 mm occurred (mean 0.54 mm, range 0.50-0.58 mm). These four electrodes were found in the two first implanted patients. In both cases, the intraoperative CT scan had a slice thickness of 0.5 mm and showed severe scattering. This might imply that the measured displacement was (partially) related to a higher measurement error. None of the vestibular electrodes migrated outside of the ampulla. No displacement was observed in any of the vestibular electrodes between the first postoperative scan and the one-year follow-up scan.
Conclusion: The current surgical technique seems to securely stabilize the vestibular VI electrodes over time.
(© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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