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. 2022 Mar;279(3):1193-1201.
doi: 10.1007/s00405-021-06743-3. Epub 2021 Mar 19.

Evaluation of vestibular function following endolymphatic sac surgery

Adrien Gendre  1 , Kinnie Bourget-Aguilar  2 , Catherine Calais  2 , Florent Espitalier  2 , Philippe Bordure  2 , Guillaume Michel  2
Affiliations

Evaluation of vestibular function following endolymphatic sac surgery

Adrien Gendre et al. Eur Arch Otorhinolaryngol. 2022 Mar.

Abstract

Purpose: To evaluate objective vestibular function after endolymphatic sac surgery (ELSS) for Menière's disease (MD), using comparative vestibular function tests: videonystagmography (VNG), vestibular evoked myogenic potentials (VEMP) and video head-impulse test (VHIT) METHODS: Patients with definite MD using the American Academy of Otolaryngology-Head and Neck Surgery (AAO-HNS) of 1995 criteria modified in 2015 and treated with ELSS (sac decompression or sac opening) were included. The primary outcome was the preservation of vestibular function, comparing pre- and postoperative vestibular function tests: VNG, VEMP, VHIT. Secondary outcomes were control of episodes of vertigo, hearing outcome using AAO-HNS criteria, and QoL using the Menière's disease outcome questionnaire.

Results: 73 patients were included in the study. We found a significant preservation of vestibular function as measured by VNG and VHIT. There was no statistical difference in the presence or absence of cervical and ocular (P13/N23 and N1/P1) waves on VEMP pre- and postoperatively. 67% of patients had good control of episodes of vertigo post-operatively, with significantly better results in the sac opening group (75%). There was no significant change in hearing postoperatively, and QoL scores were significantly improved after surgery (p < 0.0001).

Conclusion: Endolymphatic sac surgery (ELSS) is a conservative surgical treatment, which does not negatively impact vestibular function. It was associated with improved control of episodes of vertigo, preservation of hearing, and a clear improvement in QoL scores. Despite its pathophysiology not being fully understood, it remains a first-line procedure preserving vestibular function, for MD refractory to medical management.

Keywords: Caloric test; Endolymphatic sac surgery; Menière’s disease; Vertigo; Vestibular evoked myogenic potentials; Vestibular function tests.

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References

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