Laying the Groundwork to Study the Heterogeneous Nature of Vocal Fatigue

Nanjundeswaran, Chaya D.; Shembel, Adrianna C.

doi:10.1016/j.jvoice.2022.07.008

Cited by 8 publications

(1 citation statement)

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“…Because the literature supports self‐perceived metrics as the most reliable indicator of pMTD, 6,29,30 two such indices were used as additional inclusion criteria. The goal of these indices was to ensure significant group differences in self‐perceived severity of vocal impairment using the Voice Handicap Index‐10 (VHI‐10) and severity of vocal fatigue—a common complaint in patients with pMTD, 2,31 using the Vocal Fatigue Index (VFI).…”

Section: Methodsmentioning

confidence: 99%

Extrinsic Laryngeal Muscle Tension in Primary Muscle Tension Dysphonia with Shear Wave Elastography

et al. 2023

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ObjectivesIt has been assumed that patients with primary muscle tension dysphonia (pMTD) have more extrinsic laryngeal muscle (ELM) tension, but tools to study this phenomenon lack. Shear wave elastography (SWE) is a potential method to address these shortcomings. The objectives of this study were to apply SWE to the ELMs, compare SWE measures to standard clinical metrics, and determine group differences in pMTD and typical voice users before and after vocal load.MethodsSWE measurements of the ELMs from ultrasound examinations of the anterior neck, supraglottic compression severities from laryngoscopic images, cepstral peak prominences (CPP) from voice recordings, and self‐perceptual ratings of vocal effort and discomfort were obtained in voice users with (N = 30) and without (N = 35) pMTD, before and after a vocal load challenge.ResultsELM tension significantly increased from rest‐to‐voiced conditions in both groups. However, the groups were similar in their ELM stiffness levels at SWE at baseline, during vocalization, and post‐vocal load. Levels of vocal effort and discomfort and supraglottic compression were significantly higher and CPP was significantly lower in the pMTD group. Vocal load had a significant effect on vocal effort and discomfort but not on laryngeal or acoustic patterns.ConclusionSWE can be used to quantify ELM tension with voicing. Although the pMTD group reported significantly higher levels of vocal effort and vocal tract discomfort and, on average, exhibited significantly more severe supraglottic compression and lower CPP values, there were no group differences in levels of ELM tension using SWE.Level of Evidence2 Laryngoscope, 2023

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Section: Methodsmentioning

confidence: 99%