Muscle Tension Dysphonia: Which Laryngoscopic Features Can We Rely on for Diagnosis?

Journal of Voice : Official Journal of the Voice Foundation
Octavio GaraycocheaSecundino Fernández

Abstract

Muscle tension dysphonia (MTD) is generally diagnosed through clinical history and physical examination. Several diagnostic or classification systems exist, such as those of Van Lawrence, Morrison-Rammage, and Koufman, that delineate MTD and distinguish subtypes on the basis of laryngoscopic features. The aim of this study is to determine which of the clinical features included in these classifications are most related to the aerodynamic profile of MTD. This is an analytic retrospective study. This study evaluates a series of 30 consecutive patients, all over 18 years old, who attended the voice clinic consult of our department and were diagnosed with MTD. All subjects underwent fiberoptic nasal endoscopy, acoustic voice assessment, and aerodynamic voice assessment. The study only includes patients with a pathological aerodynamic profile. Presence or absence of each laryngoscopic feature in the full range of features in the Van Lawrence, Morrison-Rammage, and Koufman classification systems was evaluated independently by three experts. Cohen's kappa coefficient was calculated to indicate the degree of concordance between the experts. The chi-squared test was used to determine the degree of association between clinical features a...Continue Reading

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Citations

Feb 6, 2020·Journal of Speech, Language, and Hearing Research : JSLHR·Victoria S McKennaCara E Stepp
Jul 4, 2020·Journal of Speech, Language, and Hearing Research : JSLHR·Secundino FernándezJuan Alcalde

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