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The Effect of Adding Cricothyroid Visor Maneuver to Voice Facilitating Techniques on Improving Voice in Individuals With Primary Muscle Tension Dysphonia: A Pilot Randomized Clinical Trial Publisher Pubmed



Mokhlesin M1 ; Kohansal A2 ; Tahmasebi N3 ; Dehqan A4, 5 ; Tohidast SA1 ; Mansuri B6
Authors
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Authors Affiliations
  1. 1. Neuromuscular Rehabilitation Research Center, Semnan University of Medical Sciences, Semnan, Iran
  2. 2. Department of Speech Therapy, School of Rehabilitation, Tehran University of Medical Sciences, Tehran, Iran
  3. 3. Department of Speech Therapy, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
  4. 4. Rehabilitation Sciences Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
  5. 5. Speech Therapy Dept., Rehabilitation Faculty, Zahedan University of Medical Sciences, Zahedan, Iran
  6. 6. Department of Speech Therapy, School of Rehabilitation Sciences, Semnan University of Medical Sciences, Semnan, Iran

Source: Journal of Voice Published:2023


Abstract

Objectives: The purpose of the present study was to examine the effect of adding a cricothyroid visor maneuver to conventional voice-facilitating techniques on voice quality and reported symptoms in patients with primary muscle tension dysphonia. Methods: This was a double-blind two parallel-group clinical trial in which 20 adult patients participated through convenience sampling. Participants were allocated to intervention (combined treatment) and control (conventional treatment) groups. The intervention was performed for both groups for five sessions, twice a week. The two groups were compared after the intervention for primary outcome measures including maximum phonation time, jitter, shimmer, harmonic-to-noise ratio, and consensus auditory-perceptual evaluation of voice, and for secondary outcome measures including the voice handicap index, the voice activity and participation profile, the voice-related pain scale, and the vocal tract discomfort scale. Results: Within-group primary outcome comparison showed that both groups showed significant improvement in maximum phonation time and consensus auditory-perceptual evaluation of voice indices after treatment. the between-group comparison showed that the maximum phonation time increased significantly in the intervention group after the treatment (P = 0.03) and the effect size was large (es = 1.05). within-group secondary outcome comparison showed that all indices improved significantly in both groups except for the voice-related pain scale frequency. The between-group comparison showed that except for voice-related pain scale frequency, the intervention group reported significantly more improvement in all other self-reporting indices with a large effect size. Conclusions: The study showed that adding cricothyroid visor maneuver to conventional voice-facilitating techniques, compared to conventional treatment alone, resulted in a significant increase in maximum phonation time, reduction in pain and vocal tract discomfort, increase in activity and participation, and improvement in voice-handicapped index in primary muscle tension dysphonia patients. Therefore adding cricothyroid visor maneuver to other treatments can be an effective method in improving primary muscle tension dysphonia which needs more studies in the future. © 2023 The Voice Foundation
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