Biomechanical and Temporal Measurement of Pharyngeal Swallowing for Stroke Patients with Aspiration
Date of Award
Doctor of Philosophy
Speech and Hearing Science
Carl W. Asp
Isa Schwarz, Molly Erickson, Olga Welch
This study compared three pharyngeal swallowing measurements: Pharyngeal Delay Time (PDT), Stage Transition Duration (STD), and Delayed Pharyngeal Swallow (DPS) on the correct classification of three groups of subjects. These groups were: 15 stroke patients who aspirated (aspirators), 15 stroke patients who did not aspirate (non-aspirators) and 15 normal subjects.
Overall, the STD had highest mean classification among the three pharyngeal swallowing measurements. All three measures has a significant difference between aspirators and normal subjects. None of the measurements showed a difference between non-aspirators and normal subjects. The aspirators and the normal subjects were classified correctly most often; whereas the non-aspirators were considerably lower. The aspirators had the longest duration for triggering pharyngeal swallowing, whereas non-aspirators and normal subjects had similar durations. Clinical implications were discussed.
Kim, Youngsun, "Biomechanical and Temporal Measurement of Pharyngeal Swallowing for Stroke Patients with Aspiration. " PhD diss., University of Tennessee, 2004.
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