Document Detail


Lung volume effects on pharyngeal swallowing physiology.
MedLine Citation:
PMID:  12909607     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The experiment was a prospective, repeated-measures design intended to determine how the variation of lung volume affects specific measures of swallowing physiology. Swallows were recorded in 28 healthy subjects, who ranged in age from 21 to 40 yr (mean age of 29 yr), by using simultaneous videofluoroscopy, bipolar intramuscular electromyography, and respiratory inductance plethysmography. Each subject swallowed three standardized pudding-like consistency boluses at three randomized lung volumes: total lung capacity, functional residual capacity, and residual volume. The results showed that pharyngeal activity duration of deglutition for swallows produced at residual volume was significantly longer than those occurring at total lung capacity or at functional residual capacity. No significant differences were found for bolus transit time or intramuscular electromyography of the superior constrictor. The results of this experiment lend support to the hypothesis that the respiratory system may have a regulatory function related to swallowing and that positive subglottic air pressure may be important for swallowing integrity. Eventually, new treatment paradigms for oropharyngeal dysphagia that are based on respiratory physiology may be developed.
Authors:
Roxann Diez Gross; Charles W Atwood; Judith P Grayhack; Susan Shaiman
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2003-08-08
Journal Detail:
Title:  Journal of applied physiology (Bethesda, Md. : 1985)     Volume:  95     ISSN:  8750-7587     ISO Abbreviation:  J. Appl. Physiol.     Publication Date:  2003 Dec 
Date Detail:
Created Date:  2003-11-05     Completed Date:  2004-07-06     Revised Date:  2013-09-26    
Medline Journal Info:
Nlm Unique ID:  8502536     Medline TA:  J Appl Physiol (1985)     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2211-7     Citation Subset:  IM    
Affiliation:
Department of Audiology and Speech Pathology, Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, PA 15240, USA. Roxann.Gross@med.va.gov
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MeSH Terms
Descriptor/Qualifier:
Adult
Air Pressure
Deglutition / physiology*
Deglutition Disorders / physiopathology
Electromyography
Female
Fluoroscopy
Humans
Lung / anatomy & histology*,  physiology*
Lung Volume Measurements
Male
Pharynx / physiology*,  radiography
Respiratory Mechanics / physiology
Tracheostomy

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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