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[Surgery of the laryngeal framework: type I thyroplasty]
J Guerrero1, I Cobeta, J D García-Díaz
1Hospital Universitario Príncipe de Asturias, Alcalá de Henares, Madrid.
Acta Otorrinolaringologica Espanola
|April 29, 1998
Summary
Type I thyroplasty effectively improved voice quality in patients with unilateral vocal cord paralysis. The surgical technique led to significant enhancements in vocal parameters like phonation time and voice clarity.
Area of Science:
- Otolaryngology
- Speech Science
Background:
- Unilateral vocal cord paralysis frequently results in a breathy voice.
- Type I thyroplasty is a surgical option to address glottic insufficiency.
Purpose of the Study:
- To evaluate the efficacy of Type I thyroplasty in improving voice quality for patients with unilateral vocal cord paralysis.
- To assess objective acoustic parameters post-surgery.
Main Methods:
- Eight patients with unilateral vocal cord paralysis underwent Type I thyroplasty.
- Surgical outcomes included glottic closure assessment.
- Acoustic analysis utilized Dr. Speech version 2.0.
- Statistical analysis was performed using SPSS.
Main Results:
- All patients achieved satisfactory glottic closure.
- Significant improvements were observed in maximum phonation time.
- Reductions in shimmer and normalized noise energy indicated clearer voice quality.
Conclusions:
- Type I thyroplasty is an effective surgical intervention for unilateral vocal cord paralysis.
- The procedure significantly enhances key acoustic parameters related to voice production.
- Surgical technique modifications may further optimize outcomes.