Viscosity threshold that allows safe swallow in elderly with post-stroke dysphagia
DOI:
https://doi.org/10.19230/jonnpr.1326Keywords:
Deglutition, Deglutition Disorders, Stroke, Viscosity, AgedAbstract
Objective: To determine the viscosity threshold that allows safe swallowing in older adults with post- stroke dysphagia.
Method: Cross-sectional analytical study. 6 patients over 60 years old with dysphagia participated. Were given six viscosities (50mPa s, 110mPa s, 170mPa s, 230mPa s, 290mPa s and 350mPa s) made from no carbonated water and a corn starch-based thickener. Swallowing safety signs (wet voice, cough and oxygen saturation) were assessed in each viscosity by Fiberoptic Endoscopic Evaluation of Swallowing (FEES). Viscosities’ performances in swallowing safety signs were compared in order to know which viscosity
would be the safest.
Results: 100% of swallowing safety signs did not appear in any viscosity assessed.
Conclusions: It is not possible to determine the viscosity threshold that allows safe swallowing in patients with post-stroke dysphagia in the viscosities assessed. We discuss about multiple factors that had had affect our results: size sample, use of FEES to assess low viscosities, and viscosities’ intervals used.
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