Document Detail

Changes of timing variables in swallowing of boluses with different viscosities in patients with dysphagia.
MedLine Citation:
PMID:  22864016     Owner:  NLM     Status:  Publisher    
OBJECTIVE: To evaluate the timing of the swallowing process and the effect of bolus viscosity on swallowing. DESIGN: Prospective observational study. SETTING: General teaching hospital, rehabilitation unit PARTICIPANTS: We enrolled 82 dysphagic patients in a videofluoroscopic swallowing study (VFSS) from Jan 13, 2009 to Oct 22, 2009. Based on VFSS results, we classified patients as "thin fluid-aspirators" (n = 40) or as "non-aspirators" (n = 42). INTERVENTIONS: Swallowing of a 5 mL thick bolus and a 5 mL thin bolus in all patients. MAIN OUTCOME MEASURES: Kinematic analysis of various variables during the swallowing process (pharyngeal phase), including epiglottis contact with the bolus, laryngeal elevation, pharyngeal constriction, and upper esophageal sphincter opening. RESULTS: In both groups, the thin bolus arrived at the vallecular pouch earlier than the thick bolus. During swallowing of the thick bolus, the thin fluid-aspirators had a delayed latency of upper esophageal sphincter opening (LUEO), delayed laryngeal elevation to peak level (LPLE), and significantly longer rise time of laryngeal elevation (LPLE-LLE). CONCLUSIONS: Our results indicate clear differences in the degree of adaptation to bolus viscosity between patients classified as thin fluid-aspirators and as non-aspirators. These differences were mainly in activities of laryngeal elevators rather than pharyngeal constrictors.
Sang Il Lee; Jong Yoon Yoo; Minyoung Kim; Ju Seok Ryu
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-8-1
Journal Detail:
Title:  Archives of physical medicine and rehabilitation     Volume:  -     ISSN:  1532-821X     ISO Abbreviation:  Arch Phys Med Rehabil     Publication Date:  2012 Aug 
Date Detail:
Created Date:  2012-8-6     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2985158R     Medline TA:  Arch Phys Med Rehabil     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 the American Congress of Rehabilitation Medicine. Published by Elsevier Inc. All rights reserved.
Department of Rehabilitation Medicine, University of Ulsan College of Medicine.
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