Document Detail

Time-dependent rheology of starch thickeners and the clinical implications for dysphagia therapy.
MedLine Citation:
PMID:  17216389     Owner:  NLM     Status:  MEDLINE    
The viscosity of nonsolid foods and the stability of their viscosity over time is critical in managing dysphagia. The time-dependent viscosity of liquids thickened with starch-based thickeners was measured at constant temperature and shear rate. Viscosity was measured between 30-min intervals of rest (zero shear) over a period of 17 h at 20.0 degrees C. Two common types of thickeners were evaluated: maize-based and maltodextrin-based (the latter commonly used in pediatrics). The maize-based thickeners undergo a significant decrease in viscosity over the initial 1-4 h following preparation. The maltodextrin-based thickener's viscosity increases significantly 30 min following preparation and is then more stable over time than its maize-based equivalent. These findings suggest that the success of current dysphagia therapies that use thickeners could be influenced by the time-dependent nature of thickened fluid viscosity. Acknowledgment and appropriate selection of the thickener type is shown to be of great importance.
Richard J Dewar; Malcolm J Joyce
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Dysphagia     Volume:  21     ISSN:  0179-051X     ISO Abbreviation:  Dysphagia     Publication Date:  2006 Oct 
Date Detail:
Created Date:  2007-01-23     Completed Date:  2007-03-23     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8610856     Medline TA:  Dysphagia     Country:  United States    
Other Details:
Languages:  eng     Pagination:  264-9     Citation Subset:  IM    
Engineering Department, Lancaster University, Lancaster, United Kingdom.
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MeSH Terms
Deglutition Disorders / therapy*
Rheology / methods*
Starch / administration & dosage*
Time Factors
Treatment Outcome
Reg. No./Substance:

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

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