| Vocal efficiency and aerodynamic aspects in voice disorders. | |
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MedLine Citation:
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PMID: 3970503 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The variation of vocal efficiency for the mean values for normal subjects was investigated in patients with laryngeal disease. The relative contributions of mean flow rate and intrapulmonic pressure to the variation of efficiency were explored to explain aerodynamic aspects in voice disorders. Vocal efficiency was determined by use of expressions involving simultaneous values of sound pressure level, mean flow rate, and intrapulmonic pressure. The intrapulmonic pressure was noninvasively obtained by plethysmographic and pneumotachographic methods. Values of vocal efficiency were generally abnormally low for the types of larynges studied. An aerodynamic-biomechanical classification of laryngeal disease was inferred from the data: 1) large chink of glottis, associated with high flow rate; 2) mass on vocal fold, associated with high values of both flow rate and intrapulmonic pressure; and 3) high stiffness of vocal fold, associated with high values of intrapulmonic pressure. |
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Authors:
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S Tanaka; W J Gould |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Annals of otology, rhinology, and laryngology Volume: 94 ISSN: 0003-4894 ISO Abbreviation: Ann. Otol. Rhinol. Laryngol. Publication Date: 1985 Jan-Feb |
Date Detail:
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Created Date: 1985-03-21 Completed Date: 1985-03-21 Revised Date: 2006-05-15 |
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: 29-33 Citation Subset: AIM; IM |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Female Humans Laryngeal Diseases / classification, complications Lung / physiology Male Middle Aged Phonation* Pressure Pulmonary Ventilation Sound Voice* Voice Disorders / etiology, physiopathology* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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