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- Title
Quantitative electromyographic characteristics of idiopathic unilateral vocal fold paralysis.
- Authors
Chang, Wei‐Han; Fang, Tuan‐Jen; Li, Hsueh‐Yu; Jaw, Fu‐Shan; Wong, Alice M. K.; Pei, Yu‐Cheng
- Abstract
<bold>Objectives/hypothesis: </bold>Unilateral vocal fold paralysis with no preceding causes is diagnosed as idiopathic unilateral vocal fold paralysis. However, comprehensive guidelines for evaluating the defining characteristics of idiopathic unilateral vocal fold paralysis are still lacking. In the present study, we hypothesized that idiopathic unilateral vocal fold paralysis may have different clinical and neurologic characteristics from unilateral vocal fold paralysis caused by surgical trauma.<bold>Study Design: </bold>Retrospective, case series study.<bold>Methods: </bold>Patients with unilateral vocal fold paralysis were evaluated using quantitative laryngeal electromyography, videolaryngostroboscopy, voice acoustic analysis, the Voice Outcome Survey, and the Short Form-36 Health Survey quality-of-life questionnaire. Patients with idiopathic and iatrogenic vocal fold paralysis were compared.<bold>Results: </bold>A total of 124 patients were recruited. Of those, 17 with no definite identified causes after evaluation and follow-up were assigned to the idiopathic group. The remaining 107 patients with surgery-induced vocal fold paralysis were assigned to the iatrogenic group. Patients in the idiopathic group had higher recruitment of the thyroarytenoid-lateral cricoarytenoid muscle complex and better quality of life compared with the iatrogenic group.<bold>Conclusion: </bold>Idiopathic unilateral vocal fold paralysis has a distinct clinical presentation, with relatively minor denervation changes in the involved laryngeal muscles, and less impact on quality of life compared with iatrogenic vocal fold paralysis.<bold>Level Of Evidence: </bold>4. Laryngoscope, 126:E362-E368, 2016.
- Subjects
ELECTROMYOGRAPHY; VOCAL cord diseases; VIDEOLARYNGOSTROBOSCOPY; QUALITY of life; DIAGNOSIS; THERAPEUTICS; VOCAL cord surgery; VOCAL cord injuries; DIAGNOSTIC imaging; HEALTH surveys; LARYNGEAL muscles; OPERATIVE otolaryngology; PARALYSIS; QUESTIONNAIRES; PHYSIOLOGICAL aspects of speech; SURGICAL complications; VOCAL cords; HUMAN voice; RETROSPECTIVE studies
- Publication
Laryngoscope, 2016, Vol 126, Issue 11, pE362
- ISSN
0023-852X
- Publication type
journal article
- DOI
10.1002/lary.25944