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Hemi-laryngeal Setup for Studying Vocal Fold Vibration in Three Dimensions
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Evaluation of Vocal Fold Motion Abnormalities: Are We All Seeing the Same Thing?
Lyndsay L Madden1, Clark A Rosen2
1University of Pittsburgh Voice Center, Department of Otolaryngology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania.
Journal of Voice : Official Journal of the Voice Foundation
|November 7, 2016
Summary
Otolaryngologists demonstrate excellent reliability in assessing vocal fold motion using flexible laryngoscopy. This consistency applies to both general and fellowship-trained specialists, confirming accurate judgment of vocal fold mobility and immobility.
Area of Science:
- Otolaryngology
- Laryngology
- Diagnostic Imaging
Background:
- Flexible laryngoscopy is the primary tool for evaluating vocal fold motion.
- A unified outcome metric for vocal fold paralysis research is currently lacking.
Purpose of the Study:
- To assess the inter- and intra-rater reliability of vocal fold motion assessment among otolaryngologists.
- To evaluate consistency between general otolaryngologists and fellowship-trained laryngologists.
Main Methods:
- Prospective video perceptual analysis of 15 flexible laryngoscopic examinations.
- 10 general otolaryngologists and 10 fellowship-trained laryngologists reviewed videos.
- Reviewers assessed vocal fold mobility/immobility based on provided definitions and examples.
Main Results:
- Overall inter-rater reliability was 95% for both groups.
- General otolaryngologists showed 95% inter-rater reliability; fellowship-trained laryngologists showed 97.5%.
- Intra-rater reliability was excellent at 99% for both groups.
Conclusions:
- Excellent intra- and inter-rater agreement exists for judging vocal fold motion via flexible laryngoscopy.
- Otolaryngologists can consistently and accurately determine the presence or absence of vocal fold motion.
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