Laryngoscopy evaluation protocol for the differentiation of essential and dystonic voice tremor

Laryngoscopy evaluation protocol for the differentiation of essential and dystonic voice tremor

Title: Laryngoscopy evaluation protocol for the differentiation of essential and dystonic voice tremor;
Protocolo de avaliação por laringoscopia para diferenciar tremor vocal essencial e distônico
Author de Moraes, Bruno Teixeira Autor UNIFESP Google Scholar
de Biase, Noemi Grigoletto Autor UNIFESP Google Scholar
Abstract Introduction: Although syndromes that cause voice tremor have singular characteristics, the differential diagnosis of these diseases is a challenge because of the overlap of the existing signs and symptoms. Objective: To develop a task-specific protocol to assess voice tremor by means of nasofibro-laryngoscopy and to identify those tasks that can distinguish between essential and dystonic tremor syndromes. Methods: Cross-sectional study. The transnasal fiberoptic laryngoscopy protocol, which consisted of the assessment of palate, pharynx and larynx tremor during the performance of several vocal and non-vocal tasks with distinct phenomenological characteristics, was applied to 19 patients with voice tremor. Patients were diagnosed with essential or dystonic tremor according to the phenomenological characterization of each group. Once they were classified, the tasks associated with the presence of tremor in each syndrome were identified. Results: The tasks that significantly contributed to the differential diagnosis between essential and dystonic tremor were /s/ production, continuous whistling and reduction of tremor in falsetto. These tasks were phenomenologically different with respect to the presence of tremor in the two syndromes. Conclusion: The protocol of specific tasks by means of transnasal fiberoptic laryngoscopy is a viable method to differentiate between essential and dystonic voice tremor syndromes through the following tasks: /s/ production, continuous whistling and reduction of tremor in falsetto. (C) 2015 Associacao Brasileira de Otorrinolaringologia e Cirurgia Cervico-Facial. Published by Elsevier Editora Ltda. All rights reserved.
Keywords Tremor
Essential Tremor
Dystonia
LaryngoscopyAdductor Spasmodic Dysphonia
Movement-Disorders
Laryngeal Dystonia
Spastic Dysphonia
Sign
Language English
Sponsor Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior - CAPES
Date 2016
Published in Brazilian Journal Of Otorhinolaryngology. Sao paulo, v. 82, n. 1, p. 88-96, 2016.
ISSN 1808-8694 (Sherpa/Romeo, impact factor)
Publisher Assoc brasileira otorrinolaringologia & cirurgia cervicofacial
Extent 88-96
Origin http://dx.doi.org/10.1016/j.bjorl.2015.11.001
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000371652200014
SciELO ID S1808-86942016000100088 (statistics in SciELO)
URI http://repositorio.unifesp.br/handle/11600/49589

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