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Long‐term changes in vocal quality following isshiki thyroplasty type I
Author(s) -
Leder Steven B.,
Sasaki Clarence T.
Publication year - 1994
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 - 10.1288/00005537-199403000-00006
Subject(s) - phonation , medicine , silastic , laryngoplasty , vocal fold paralysis , implant , surgery , larynx , audiology , paralysis
Long‐term changes in vocal quality, pre‐Isshiki thyroplasty type I and up to 4 years 4 months post‐thyroplasty, were determined in a group of five subjects exhibiting unilateral vocal fold paralysis. Thyroplasty type I medializes the paralyzed fold by using a Silastic® implant for external compression of the paralyzed vocal fold. No periphonosurgical or post‐phonosurgical complications were noted. Longitudinal evaluation resulted in significantly higher vocal fundamental frequency, significant moderation of habitual vocal intensity, and significantly longer maximum phonation time. The thyroplasty group exhibited significantly more breath groups than control subjects both prethyroplasty and post‐thyroplasty; within the thyroplasty group, a reduction in breath groups was exhibited prethyroplasty as compared to post‐thyroplasty. The long‐term positive changes observed in fundamental frequency, intensity, maximum phonation time, and breath groups were attributed to medialization of the paralyzed vocal fold.