presented by Catriona Steele
In this course, Dr. Catriona Steele describes the mechanisms of the swallowing process that can impact safety and efficiency. These mechanisms include bolus dwell time, maximum hyoid extension, laryngeal vestibule closure, and pharyngeal closure. Participants will learn how to objectively evaluate the function of each of these mechanisms using video fluoroscopic studies, and identify normal and pathophysiological presentations of each mechanism. Participants will have the opportunity to practice evaluating each mechanism using VFSS video from real patients.
Dr. Catriona M. Steele is the Director of the Swallowing Rehabilitation Research Laboratory at the Toronto Rehabilitation Institute. She also teaches in the Graduate Department of Speech-Language Pathology at the University of Toronto. Prior to completing her Ph.D., Dr. Steele worked as a medical speech-language pathologist for 10 years. Dr. Steele is known for her commitment to pursuing theoretically driven research that will underpin clinical interventions with sound empirical evidence. She has received particular recognition for her work on tongue function in swallowing. Dr. Steele holds research funding from the National Institutes of Health in the United States, a Canadian Institutes of Health Research New Investigator Award, and funding from the Heart and Stroke Foundation of Ontario. She has published more than 80 peer-reviewed publications. Dr. Steele is in demand as a teacher around the world, and has given workshops and invited lectures across North America, Europe, Japan, China, Korea, Chile, New Zealand and Australia.
This chapter introduces the mechanisms that can contribute to impaired swallowing, with an emphasis on the factors that cause aspiration and residue.
This section provides additional detail regarding impaired bolus dwell time as a contributing factor of aspiration and residue, and teaches participants how to measure bolus dwell time.
In this chapter participants will be given the skills needed to effectively identify maximum hyoid excursion, and to evaluate proper laryngeal vestibule closure. The chapter will conclude with a practice section in which participants will have the opportunity to evaluate maximum hyoid excursion via VFSS of a real patient.
Poor timing or incomplete pharyngeal constriction commonly contributes to aspiration and residue buildup in patients. The final chapter of this course will address how to evaluate pharyngeal constriction closure and provide an oppertunity for participants to practice these skills.