| Collagen injection for correcting vocal fold asymmetry: high-speed imaging. | |
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MedLine Citation:
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PMID: 20583733 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVES: We hypothesized that high-speed digital imaging with videokymographic and laryngotopographic analysis would provide a quantitative method to evaluate the effect of collagen injection for the correction of asymmetric and irregular vocal fold vibration in unilateral vocal fold paralysis. METHODS: Videokymographic and laryngotopographic analysis was performed for high-speed digital recordings of vocal fold vibration for visualizing the glottal vibratory patterns, and for quantifying the frequency of vibration of each vocal fold, respectively, including comparisons between the paralyzed and normal vocal folds before and after surgery. This included prospective observations of 11 subjects with unilateral vocal fold paralysis (4 male, 7 female; mean +/- SD age, 67.1 +/- 12.0 years) using high-speed digital image analysis before and after collagen injection. RESULTS: Analysis of the laryngotopographs revealed 2 distinct frequencies of vibration for the paralyzed and contralateral vocal folds for 8 of the 11 subjects before surgery. After collagen injection, the vibration frequencies became identical, despite asymmetric vibration amplitudes. Asymmetric vibration amplitudes were also observed in the other 3 subjects before surgery, but the amplitudes became symmetric after collagen injection, despite a persistent phase shift. CONCLUSIONS: Asymmetric vibration in vocal fold paralysis was exemplified by differences in vibration frequency and amplitude between the vocal folds. The present study showed that after collagen injection, these aspects of vibratory patterns improved toward symmetry. This surgical procedure could improve the functional symmetry of the larynx for phonation. |
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Authors:
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Miwako Kimura; Takaharu Nito; Hiroshi Imagawa; Ken-Ichi Sakakibara; Roger W Chan; Niro Tayama |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: The Annals of otology, rhinology, and laryngology Volume: 119 ISSN: 0003-4894 ISO Abbreviation: Ann. Otol. Rhinol. Laryngol. Publication Date: 2010 Jun |
Date Detail:
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Created Date: 2010-06-29 Completed Date: 2010-07-15 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0407300 Medline TA: Ann Otol Rhinol Laryngol Country: United States |
Other Details:
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Languages: eng Pagination: 359-68 Citation Subset: AIM; IM |
Affiliation:
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Dept of Otolaryngology-Head and Neck Surgery, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX 75390-9035, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Aged, 80 and over Collagen / administration & dosage* Female Humans Image Processing, Computer-Assisted / methods* Kymography / methods Male Middle Aged Vibration Vocal Cord Paralysis / drug therapy*, physiopathology Vocal Cords / physiopathology Voice Quality |
| Grant Support | |
ID/Acronym/Agency:
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R01 DC006101/DC/NIDCD NIH HHS |
| Chemical | |
Reg. No./Substance:
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9007-34-5/Collagen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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