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Maximum and Minimum Phonatory Glottal Area before and after Treatment for Vocal Nodules

Background: Vocal fold nodules (VFNs) are a challenge for otolaryngologists. Glottal area (GA) waveform analysis is an examination method used for assessing vocal fold vibration and function. However, GA in patients with VFNs has rarely been studied. This study investigated the maximum and minimum G...

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Autores principales: Hsu, Cheng-Ming, Yang, Ming-Yu, Fang, Tuan-Jen, Wu, Ching-Yuan, Tsai, Yao-Te, Chang, Geng-He, Tsai, Ming-Shao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7551475/
https://www.ncbi.nlm.nih.gov/pubmed/32906704
http://dx.doi.org/10.3390/healthcare8030326
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author Hsu, Cheng-Ming
Yang, Ming-Yu
Fang, Tuan-Jen
Wu, Ching-Yuan
Tsai, Yao-Te
Chang, Geng-He
Tsai, Ming-Shao
author_facet Hsu, Cheng-Ming
Yang, Ming-Yu
Fang, Tuan-Jen
Wu, Ching-Yuan
Tsai, Yao-Te
Chang, Geng-He
Tsai, Ming-Shao
author_sort Hsu, Cheng-Ming
collection PubMed
description Background: Vocal fold nodules (VFNs) are a challenge for otolaryngologists. Glottal area (GA) waveform analysis is an examination method used for assessing vocal fold vibration and function. However, GA in patients with VFNs has rarely been studied. This study investigated the maximum and minimum GA in VFN patients using modern waveform analysis combining ImageJ software and videostroboscopy. Methods: This study enrolled 42 patients newly diagnosed with VFN, 15 of whom received voice therapy and 27 of whom underwent surgery. Acoustic parameters and maximum phonation time (MPT) were recorded, and patients completed the Chinese Voice Handicap Index-10 (VHI-C10) before and after treatment. After videostroboscopy examination, the maximum and minimum GAs were calculated using ImageJ software. The GAs of patients with VFNs before and after surgery or voice therapy were analyzed. Results: The MPTs of the patients before and after voice therapy or surgery did not change significantly. VHI-C10 scores decreased after voice therapy but the decrease was nonsignificant (14.0 ± 8.44 vs. 9.40 ± 10.24, p = 0.222); VHI-C10 scores were significantly decreased after surgery (22.53 ± 7.17 vs. 12.75 ± 9.84, p = 0.038). Voice therapy significantly increased the maximum GA (5.58 ± 2.41 vs. 8.65 ± 3.17, p = 0.012) and nonsignificantly decreased the minimum GA (0.60 ± 0.73 vs. 0.21 ± 0.46, p = 0.098). Surgery nonsignificantly increased the maximum GA (6.34 ± 3.82 vs. 8.73 ± 5.57, p = 0.118) and significantly decreased the minimum GA (0.30 ± 0.59 vs. 0.00 ± 0.00, p = 0.036). Conclusion: This study investigated the GA of patients with VFNs who received voice therapy or surgery. The findings indicated that voice therapy significantly increased maximum GA and surgery significantly decreased minimum GA. GA analysis could be applied to evaluate the efficacy of voice therapy, and it may help physicians to develop precise treatment for VFN patients (either by optimizing voice therapy or by performing surgery directly).
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spelling pubmed-75514752020-10-14 Maximum and Minimum Phonatory Glottal Area before and after Treatment for Vocal Nodules Hsu, Cheng-Ming Yang, Ming-Yu Fang, Tuan-Jen Wu, Ching-Yuan Tsai, Yao-Te Chang, Geng-He Tsai, Ming-Shao Healthcare (Basel) Article Background: Vocal fold nodules (VFNs) are a challenge for otolaryngologists. Glottal area (GA) waveform analysis is an examination method used for assessing vocal fold vibration and function. However, GA in patients with VFNs has rarely been studied. This study investigated the maximum and minimum GA in VFN patients using modern waveform analysis combining ImageJ software and videostroboscopy. Methods: This study enrolled 42 patients newly diagnosed with VFN, 15 of whom received voice therapy and 27 of whom underwent surgery. Acoustic parameters and maximum phonation time (MPT) were recorded, and patients completed the Chinese Voice Handicap Index-10 (VHI-C10) before and after treatment. After videostroboscopy examination, the maximum and minimum GAs were calculated using ImageJ software. The GAs of patients with VFNs before and after surgery or voice therapy were analyzed. Results: The MPTs of the patients before and after voice therapy or surgery did not change significantly. VHI-C10 scores decreased after voice therapy but the decrease was nonsignificant (14.0 ± 8.44 vs. 9.40 ± 10.24, p = 0.222); VHI-C10 scores were significantly decreased after surgery (22.53 ± 7.17 vs. 12.75 ± 9.84, p = 0.038). Voice therapy significantly increased the maximum GA (5.58 ± 2.41 vs. 8.65 ± 3.17, p = 0.012) and nonsignificantly decreased the minimum GA (0.60 ± 0.73 vs. 0.21 ± 0.46, p = 0.098). Surgery nonsignificantly increased the maximum GA (6.34 ± 3.82 vs. 8.73 ± 5.57, p = 0.118) and significantly decreased the minimum GA (0.30 ± 0.59 vs. 0.00 ± 0.00, p = 0.036). Conclusion: This study investigated the GA of patients with VFNs who received voice therapy or surgery. The findings indicated that voice therapy significantly increased maximum GA and surgery significantly decreased minimum GA. GA analysis could be applied to evaluate the efficacy of voice therapy, and it may help physicians to develop precise treatment for VFN patients (either by optimizing voice therapy or by performing surgery directly). MDPI 2020-09-07 /pmc/articles/PMC7551475/ /pubmed/32906704 http://dx.doi.org/10.3390/healthcare8030326 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Hsu, Cheng-Ming
Yang, Ming-Yu
Fang, Tuan-Jen
Wu, Ching-Yuan
Tsai, Yao-Te
Chang, Geng-He
Tsai, Ming-Shao
Maximum and Minimum Phonatory Glottal Area before and after Treatment for Vocal Nodules
title Maximum and Minimum Phonatory Glottal Area before and after Treatment for Vocal Nodules
title_full Maximum and Minimum Phonatory Glottal Area before and after Treatment for Vocal Nodules
title_fullStr Maximum and Minimum Phonatory Glottal Area before and after Treatment for Vocal Nodules
title_full_unstemmed Maximum and Minimum Phonatory Glottal Area before and after Treatment for Vocal Nodules
title_short Maximum and Minimum Phonatory Glottal Area before and after Treatment for Vocal Nodules
title_sort maximum and minimum phonatory glottal area before and after treatment for vocal nodules
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7551475/
https://www.ncbi.nlm.nih.gov/pubmed/32906704
http://dx.doi.org/10.3390/healthcare8030326
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