Document Detail

An acoustic profile of normal swallowing.
MedLine Citation:
PMID:  16362508     Owner:  NLM     Status:  MEDLINE    
Cervical auscultation has been proposed as a technique to augment the clinical evaluation of dysphagia to improve its accuracy in the diagnosis of dysphagia. Before using cervical auscultation to reliably diagnose disordered swallowing, it is necessary to first acoustically characterize normal swallowing for comparison with dysphagic swallowing. Ninety-seven healthy adult participants consumed teaspoon boluses of various consistencies while the sounds of swallowing were recorded. Descriptive statistics were reported for measures of duration, intensity, and frequency of the acoustic swallowing signal. Correlations between the variables and between bolus consistencies were computed. Overall, results compared favorably with previous research. Significant correlations were found among several of the variables, including an increasing duration of the acoustic swallowing signal with increasing age and decreasing intensity of the signal with increasing age. None of the variables differed significantly as a function of gender. Of potential clinical relevance, significant correlations between bolus consistencies for the duration and intensity variables indicated relative similarities across bolus consistencies. Duration and intensity of the acoustic signal appeared to be the most reliable of the variables measured. These results could serve as a reference point for future studies into normal swallowing across multiple bolus consistencies and volumes and eventually be compared with disordered swallowing.
Scott R Youmans; Julie A G Stierwalt
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Dysphagia     Volume:  20     ISSN:  0179-051X     ISO Abbreviation:  -     Publication Date:  2005  
Date Detail:
Created Date:  2005-12-19     Completed Date:  2006-02-28     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8610856     Medline TA:  Dysphagia     Country:  United States    
Other Details:
Languages:  eng     Pagination:  195-209     Citation Subset:  IM    
Department of Communication Sciences and Disorders, Long Island University, Brooklyn Campus, 1 University Plaza, Brooklyn, NY 11201, USA.
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MeSH Terms
Age Factors
Auscultation / methods
Deglutition / physiology*
Deglutition Disorders / diagnosis*,  etiology
Middle Aged
Risk Factors
Sensitivity and Specificity
Sex Factors
Sound Spectrography

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

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