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Influence of superior laryngeal nerve injury on glottal configuration/function of thyroidectomy-induced unilateral vocal fold paralysis.
Otolaryngol Head Neck Surg. 2014 Dec; 151(6):996-1002.OH

Abstract

OBJECTIVE

Recurrent laryngeal nerve (RLN) injury may induce unilateral vocal fold paralysis (UVFP). During thyroidectomy, the most common cause of UVFP, the superior laryngeal nerve (SLN), is also at risk of injury. In the literature, the influence of SLN injury on glottal configuration and function in patients with UVFP remains controversial. The present study investigates SLN injury influence on glottal configuration and function in patients with UVFP after thyroidectomy.

STUDY DESIGN

Prospective controlled study.

SETTING

Tertiary medical center.

SUBJECTS AND METHODS

The SLN and RLN function of 34 patients with UVFP after thyroidectomy was determined by laryngeal electromyography. The subjects were dichotomized into the isolated RLN injury group (n = 26) or the concurrent SLN/RLN injury group (n = 8). We evaluated glottal angle and paralyzed vocal fold shape during inspiration, normalized glottal gap area, and glottal shape during phonation. The glottal function measurements included voice acoustic and aerodynamic analyses and the Voice Handicap Index. The aforementioned parameters of the RLN and concurrent SLN/RLN injury groups were compared.

RESULTS

There were no statistical differences in glottal configuration such as glottal angle, paralyzed vocal fold shape, normalized glottal gap area, and glottal shape between the RLN and concurrent SLN/RLN injury groups. There were also no significant differences in other glottal function analyses including fundamental frequency, mean airflow rate, phonation quotient, maximal phonation time, and Voice Handicap Index.

CONCLUSION

In the present study, we did not find any evidence that SLN injury could significantly influence the glottal configuration and function in patients with UVFP.

Authors+Show Affiliations

Department of Sensory Organs, ENT Section, Sapienza University of Rome, Rome, Italy Department of Otolaryngology, Taichung Veterans General Hospital, Taichung City, Taiwan.Department of Neurology, Taichung Veterans General Hospital, Taichung City, Taiwan.Department of Otolaryngology, Taichung Veterans General Hospital, Taichung City, Taiwan.Department of Otolaryngology, Taichung Veterans General Hospital, Taichung City, Taiwan.Department of Otolaryngology, Taichung Veterans General Hospital, Taichung City, Taiwan.Department of Otolaryngology, Taichung Veterans General Hospital, Taichung City, Taiwan School of Medicine, National Yang-Ming University, Taipei, Taiwan.Department of Otolaryngology, Taichung Veterans General Hospital, Taichung City, Taiwan School of Medicine, National Yang-Ming University, Taipei, Taiwan School of Speech Language Pathology & Audiology, Chung-Shan Medical University, Taichung City, Taiwan entccwang@msn.com.

Pub Type(s)

Comparative Study
Controlled Clinical Trial
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

25214548

Citation

De Virgilio, Armando, et al. "Influence of Superior Laryngeal Nerve Injury On Glottal Configuration/function of Thyroidectomy-induced Unilateral Vocal Fold Paralysis." Otolaryngology--head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery, vol. 151, no. 6, 2014, pp. 996-1002.
De Virgilio A, Chang MH, Jiang RS, et al. Influence of superior laryngeal nerve injury on glottal configuration/function of thyroidectomy-induced unilateral vocal fold paralysis. Otolaryngol Head Neck Surg. 2014;151(6):996-1002.
De Virgilio, A., Chang, M. H., Jiang, R. S., Wang, C. P., Wu, S. H., Liu, S. A., & Wang, C. C. (2014). Influence of superior laryngeal nerve injury on glottal configuration/function of thyroidectomy-induced unilateral vocal fold paralysis. Otolaryngology--head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery, 151(6), 996-1002. https://doi.org/10.1177/0194599814549740
De Virgilio A, et al. Influence of Superior Laryngeal Nerve Injury On Glottal Configuration/function of Thyroidectomy-induced Unilateral Vocal Fold Paralysis. Otolaryngol Head Neck Surg. 2014;151(6):996-1002. PubMed PMID: 25214548.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Influence of superior laryngeal nerve injury on glottal configuration/function of thyroidectomy-induced unilateral vocal fold paralysis. AU - De Virgilio,Armando, AU - Chang,Ming-Hong, AU - Jiang,Rong-San, AU - Wang,Ching-Ping, AU - Wu,Shang-Heng, AU - Liu,Shih-An, AU - Wang,Chen-Chi, Y1 - 2014/09/11/ PY - 2014/9/13/entrez PY - 2014/9/13/pubmed PY - 2015/2/3/medline KW - cricothyroid muscle KW - glottal configuration KW - superior laryngeal nerve KW - thyroidectomy KW - vocal fold paralysis SP - 996 EP - 1002 JF - Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery JO - Otolaryngol Head Neck Surg VL - 151 IS - 6 N2 - OBJECTIVE: Recurrent laryngeal nerve (RLN) injury may induce unilateral vocal fold paralysis (UVFP). During thyroidectomy, the most common cause of UVFP, the superior laryngeal nerve (SLN), is also at risk of injury. In the literature, the influence of SLN injury on glottal configuration and function in patients with UVFP remains controversial. The present study investigates SLN injury influence on glottal configuration and function in patients with UVFP after thyroidectomy. STUDY DESIGN: Prospective controlled study. SETTING: Tertiary medical center. SUBJECTS AND METHODS: The SLN and RLN function of 34 patients with UVFP after thyroidectomy was determined by laryngeal electromyography. The subjects were dichotomized into the isolated RLN injury group (n = 26) or the concurrent SLN/RLN injury group (n = 8). We evaluated glottal angle and paralyzed vocal fold shape during inspiration, normalized glottal gap area, and glottal shape during phonation. The glottal function measurements included voice acoustic and aerodynamic analyses and the Voice Handicap Index. The aforementioned parameters of the RLN and concurrent SLN/RLN injury groups were compared. RESULTS: There were no statistical differences in glottal configuration such as glottal angle, paralyzed vocal fold shape, normalized glottal gap area, and glottal shape between the RLN and concurrent SLN/RLN injury groups. There were also no significant differences in other glottal function analyses including fundamental frequency, mean airflow rate, phonation quotient, maximal phonation time, and Voice Handicap Index. CONCLUSION: In the present study, we did not find any evidence that SLN injury could significantly influence the glottal configuration and function in patients with UVFP. SN - 1097-6817 UR - https://www.unboundmedicine.com/medline/citation/25214548/Influence_of_superior_laryngeal_nerve_injury_on_glottal_configuration/function_of_thyroidectomy_induced_unilateral_vocal_fold_paralysis_ L2 - https://journals.sagepub.com/doi/10.1177/0194599814549740?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -