title: The impact of rheologically controlled materials on the identification of airway compromise on the clinical and videofluoroscopic swallowing examinations.
abstract: Numerous studies have suggested that the clinical evaluation of swallowing fails to adequately identify those patients who aspirate or do not aspirate on a videofluoroscopic swallowing examination. These conclusions, however, are based on comparisons between swallowed materials that were not rheologically matched. The present study used a battery of rheologically matched test materials, involving thin and thick liquids and cohesive and adhesive semisolids. Using these test items, results from a clinical swallow evaluation were compared to the results of a videofluorographic evaluation using identical test materials. Results suggest that the use of three test materials, including thin and thick liquids given in volumes of 5 and 10 ml, demonstrated the strongest associations between cough on the clinical examination and aspiration on the videofluoroscopic examination.
authors.affiliation: Department of Communicative Disorders, University of Redlands, Redlands, California 92373-0999, USA. Michael_groher@redlands.edu
authors.forename: Michael E
authors.initials: ME
authors.lastname: Groher
authors.forename: Michael A
authors.initials: MA
authors.lastname: Crary
authors.forename: Giselle
authors.initials: G
authors.lastname: Carnaby Mann
authors.forename: Zata
authors.initials: Z
authors.lastname: Vickers
authors.forename: Carlos
authors.initials: C
authors.lastname: Aguilar
mesh_terms: D000402:Airway Obstruction / Q000150:complications* / Q000175:diagnosis*; D003371:Cough; D003680:Deglutition Disorders / Q000175:diagnosis* / Q000209:etiology*; D005471:Fluoroscopy / Q000295:instrumentation; D006801:Humans; D012212:Rheology / Q000379:methods*; D012720:Severity of Illness Index; D014741:Video Recording; D014783:Viscosity; D014833:Voice Quality