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European Archives of Oto-Rhino-Laryngology

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Open Access 01-03-2020 | Laryngology

Pre- and intraoperative acoustic and functional assessment of the novel APrevent^® VOIS implant during routine medialization thyroplasty

Authors: Guan-Yuh Ho, Matthias Leonhard, Doris-Maria Denk-Linnert, Berit Schneider-Stickler

Published in: European Archives of Oto-Rhino-Laryngology | Issue 3/2020

Abstract

Purpose

Persistent unilateral vocal fold paralysis (UFVP) with glottal insufficiency often requires type I medialization thyroplasty (MT). Previous implants cannot be adjusted postoperatively if necessary. The newly developed APrevent^® VOIS implant (VOIS) can provide postoperative re-adjustment to avoid revision MT. The objective of this pilot study is to evaluate the VOIS intraoperatively concerning voice improvement, surgical feasibility and device handling.

Methods

During routine MT, VOIS was applied short time in eight patients before the regular implantation of the Titanium Vocal Fold Medialization Implant (TVFMI™). In all patients, perceptual voice sound analysis using R(oughness)–B(reathiness)–H(oarseness)-scale, measurement of M(aximum)–P(honation)–T(ime) and glottal closure in videolaryngoscopy were performed before and after implanting VOIS/TVFMI™. Acoustic analyses of voice recordings were performed using freeware praat. Surgical feasibility, operative handling and device fitting of VOIS and TVFMI™ were assessed by the surgeon using V(isual)-A(nalog)-S(cale). Data were statistically analyzed with paired t test.

Result

All patients showed significant improvement of voice sound parameters after VOIS/TVFMI™ implantation. The mean RBH-scale improved from preoperative R = 2.1, B = 2.3, H = 2.5 to R = 0.6, B = 0.3, H = 0.8 after VOIS and R = 0.5, B = 0.3, H = 0.8 after TVFMI™ implantation. The mean MPT increased from preoperative 7.9 to 14.6 s after VOIS and 13.8 s after TVFMI™ implantation. VOIS/TVFMI™ achieved complete glottal closure in 7/8 patients. The satisfaction with intraoperative device fitting and device handling of VOIS was as good as that of TVFMI™.

Conclusion

The novel APrevent^® VOIS implant showed similar intraoperative voice improvement compared to routinely used TVFMI™ without adverse device events and with safe device fitting.

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Title: Pre- and intraoperative acoustic and functional assessment of the novel APrevent® VOIS implant during routine medialization thyroplasty
Authors: Guan-Yuh Ho
Matthias Leonhard
Doris-Maria Denk-Linnert
Berit Schneider-Stickler
Publication date: 01-03-2020
Publisher: Springer Berlin Heidelberg
Published in: European Archives of Oto-Rhino-Laryngology / Issue 3/2020
Print ISSN: 0937-4477
Electronic ISSN: 1434-4726
DOI: https://doi.org/10.1007/s00405-019-05756-3

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Pre- and intraoperative acoustic and functional assessment of the novel APrevent^® VOIS implant during routine medialization thyroplasty

Abstract

Purpose

Methods

Result

Conclusion

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Purpose

Methods

Result

Conclusion

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