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Longitudinal Evaluation of Vocal Function After Thyroplasty Type I in the Treatment of Unilateral Vocal Paralysis
Author(s) -
Lu FangLing,
Casiano Roy R.,
Lundy Donna S.,
Xue JunWu
Publication year - 1996
Publication title -
the laryngoscope
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.181
H-Index - 148
eISSN - 1531-4995
pISSN - 0023-852X
DOI - 10.1097/00005537-199605000-00010
Subject(s) - paralysis , vocal fold paralysis , medicine , laryngeal paralysis , surgery
This study investigated longitudinal changes of vocal efficiency and stability after primary thyroplasty type I. Fifty‐three patients with unilateral vocal‐fold paralysis underwent vocal‐function evaluation preoperatively and at periodic intervals of 1, 3, and 6 months postoperatively. Vocal‐function assessment included videostrobolaryngoscopic examination, acoustical and aerodynamic analysis, and perceptual judgment of voice characteristics. Parameters that included glottic‐gap size, maximum phonation time, glottic‐flow rate, jitter, harmonic/noise ratio, breathiness, hoarseness, loudness, and phrasing showed significant improvement after thyroplasty and remained stable as early as 1 month postoperatively, with only slight fluctuations over a 6‐month period. Postoperative voice outcome was not affected by age, sex, duration of vocal symptoms, cause of paralysis, or preoperative pulmonary function. Laryngoscope, 106:573‐577, 1996