Long-Term Quantitative Results of an Isshiki Type 4 Thyroplasty—A Case Study

Summary Objective We believe that we have described the first instance of long-term follow-up of a bilateral Isshiki type IV thyroplasty in a 58-year-old woman after bilateral superior laryngeal nerve (SLN) damage. Method Comparison of voice handicap index-10 (VHI-10) questionnaire and electrolaryng...

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Veröffentlicht in:Journal of voice 2011-05, Vol.25 (3), p.283-287
Hauptverfasser: Gibbins, Nicholas, Bray, Dominic, Harries, Meredydd L
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Sprache:eng
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Zusammenfassung:Summary Objective We believe that we have described the first instance of long-term follow-up of a bilateral Isshiki type IV thyroplasty in a 58-year-old woman after bilateral superior laryngeal nerve (SLN) damage. Method Comparison of voice handicap index-10 (VHI-10) questionnaire and electrolaryngographic measurements pre- and post-thyroplasty (type IV). Results VHI-10 scores reduced from 25 pre-thyroplasty to seven and five at 6 and 34 months, respectively. Mean, mode, and median dynamic frequency range (DFx-1) scores increased from 118, 125, and 124 Hz preoperatively to 144, 172, and 163 Hz at 6 months and 167, 167, and 169 Hz, at 34 months, respectively (a subjectively higher voice). Range of tones produced while speaking reduced from an 80% range of 2.48 octaves and 90% range of 3.52 octaves to scores of 1.46 and 2.75 octaves for 80% and 90%, respectively at 6 months and 0.82 and 1.73 octaves at 34 months (a more defined voice). Ninety percent spectrum of single tone production increased from 0.17 octaves preoperatively to 0.55 octaves at 6 months and 0.49 octaves at 34 months. Discussion Type IV thyroplasty is most commonly performed for the male-to-female transsexual patient. Bilateral SLN palsy can be effectively treated with this approach with good long-term results. Conclusion Three-year follow-up for bilateral type IV thyroplasty reveals increased pitch, definition, and clarity but decreased range overall.
ISSN:0892-1997
1873-4588
DOI:10.1016/j.jvoice.2009.11.007