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Understanding the Events of Swallowing in Normal and Disordered Adults: A Research-Based Course

presented by Ianessa Humbert, PhD, CCC-SLP

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Target Audience:

Disclosure Statement:

Financial: Ianessa Humbert receives compensation from MedBridge for this course. There is no financial interest beyond the production of this course.

Non-Financial: Ianessa Humbert has no competing non-financial interests or relationships with regard to the content presented in this course.

Satisfactory completion requirements: All disciplines must complete learning assessments to be awarded credit, no minimum score required unless otherwise specified within the course.

MedBridge is committed to accessibility for all of our subscribers. If you are in need of a disability-related accommodation, please contact [email protected]. We will process requests for reasonable accommodation and will provide reasonable accommodations where appropriate, in a prompt and efficient manner.

Accreditation Check:
This course will be retired and no longer available as of January 11, 2022. Please complete the course by December 31, 2021, to receive credit.

This course, with Dr. Ianessa Humbert, offers an in depth assessment of six important swallowing events: triggering the swallow, posterior lingual propulsion, velar elevation, pharyngeal constriction and elevation, laryngeal vestibule closure, and upper esophageal sphincter opening. For each swallowing event, normal and abnormal movements and/or sensation are described, and probing strategies are discussed (i.e. modifying the event with bolus volume, head position, swallowing maneuvers). The information presented is based in research literature, including full citations for further review. This course shows each swallowing event using a combination of representative video fluoroscopic studies and anatomical animations of each abnormal swallowing event.

Meet Your Instructor

Ianessa Humbert, PhD, CCC-SLP

Dr Humbert is an Assistant Professor in the Department of Physical Medicine and Rehabilitation at Johns Hopkins University in Baltimore, MD. She is an accomplished researcher, having studied the effects of electrical stimulation on hyo-laryngeal movement in healthy and dysphagic adults. Dr. Humbert's current research focuses on swallowing neurophysiology and motor learning in normal and…

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Chapters & Learning Objectives

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1. Introduction: What is Oropharyngeal Swallowing?

In this chapter, the participant will be introduced to theories of swallowing, including Kahrilas' theory of swallowing in two parts. The clinical relevance of probing a swallowing event will also be discussed.

2. Triggering the Swallow

In this chapter, the first event of the swallow, the triggering event, will be described and discussed. The participant will learn to describe the sensory and motor components of triggering the swallow, describe normal variation in onset of swallow triggering, and discuss the impact of bolus type, cueing, and thermal stimulation on the swallow triggering.

3. Posterior Lingual Propulsion

This chapter introduces the participant to the posterior lingual propulsion event. The participant will learn basic sensory and motor components of the posterior lingual prolusion event, identify the primary force behind bolus movement, and describe abnormal posterior lingual propulsion.

4. Velar Elevation and Velo-Pharyngeal Closure

In this chapter, Dr. Humbert discusses the process of velar elevation and velo-pharyngeal closure. The participant will learn the basic sensory and motor components of the process, describe abnormal velar elevation, and identify specific tasks that modify velar elevation.

5. Pharyngeal Constriction

This chapter explores the swallowing event of pharyngeal contraction. The participant will be given the tools to differentiate between longitudinal pharyngeal muscles and pharyngeal constrictor muscles, describe the timing and range of motion of ht pharynx during swallowing, and identify tasks that modify pharyngeal constriction.

6. Laryngeal Vestibule Closure

In this chapter, the process of laryngeal vestibule closure will be discussed. Participants will identify events that contribute to abnormal laryngeal vestibule closure, describe the motor and sensory components of laryngeal vestibule closure, and identify tasks that can be used to modify laryngeal vestibule closure.

7. Upper Esophageal Sphincter Opening

In the final chapter of this course, the event of the upper esophageal sphincter (UES) opening will be described. After viewing this chapter, participants will be able to describe the relationship between UES pressures and bolus flow, list the neuromuscular and biomechanical components of UES opening, and identify tasks that modify UES pressures and opening.

8. Discussion with Dr. Robert Miller

Dr. Humbert sits down with Dr. Robert Miller to discuss the current research surrounding the events of swallowing.

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