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Utility of a Clinical Swallowing Exam for Understanding Swallowing Physiology

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Abstract

A clinical swallowing examination (CSE) is generally believed to be inadequate for making judgments regarding swallowing physiology compared to objective assessments. A large volume of studies has heavily focused on identifying aspiration using a CSE and research addressing physiologic information gathered from a CSE is sparse. The purpose of this study was to examine the utility of the CSE for assessing physiology compared to videofluoroscopic swallowing studies (VFSS). Data were derived from a prior investigation of sixty adult patients post-stroke tested with CSE and VFSS. The CSE included an examination of historical measures, oral motor/speech/voice, and trial swallows. The VFSS consisted of swallows of controlled portions of thin, thick, puree, and solid boluses. Previous results from these patients demonstrated significant accuracy in making binary estimates of aspiration and the presence of dysphagia. This analysis of data focused on physiologic measures, as well as overall dysphagia severity and diet recommendations. Significant associations between CSE and VFSS ratings were observed for hyolaryngeal elevation, overall swallowing severity, and diet recommendations. These findings were specific for certain bolus consistencies. These data suggest that the CSE may not provide significant physiological information other than hyolaryngeal excursion. This does not preclude the fact that the CSE is important in providing substantial information about overall dysphagia severity. It appears that the CSE is more powerful than simply a “screening” tool. More prospective research designs are warranted to substantiate the strengths of the CSE.

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Authors and Affiliations

  1. Department of Communication Sciences and Disorders, East Carolina University, 600 Moye Blvd., Mailstop 668, Greenville, NC, 27834, USA

    Balaji Rangarathnam

  2. Beaver College of Health Sciences, Appalachian State University, ASU Box 32102, Boone, NC, 28608, USA

    Gary H. McCullough

Authors
  1. Balaji Rangarathnam
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  2. Gary H. McCullough
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Correspondence to Balaji Rangarathnam.

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Rangarathnam, B., McCullough, G.H. Utility of a Clinical Swallowing Exam for Understanding Swallowing Physiology. Dysphagia 31, 491–497 (2016). https://doi.org/10.1007/s00455-016-9702-1

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  • DOI: https://doi.org/10.1007/s00455-016-9702-1

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