Identification of Swallowing Patterns
Associated with Dysphagia
UM Technology Enhanced
Learning Project Description
Normal Adult Swallow - Liquid Gulp from a glass
(lateral view)
The subject is a 47 year old male with no history
of swallowing problems. The videofluoroscopy segments include
swallowing of a Liquid Gulp from a glass (lateral view) .
Notice that 2 swallows are needed to clear the
liquid. This is considered normal.
You may also view each stage:
1. Oral
Preparatory and Oral Phases
- bolus held between the tongue and the anterior
hard palate with the tongue cupping the liquid bolus with the
sides of the tongue sealed against the lateral
alveolus
- soft palate pulled down and forward, sealing
off oral cavity from the pharynx if there is no active
chewing
- tongue moves bolus posteriorly
- this stage takes less than 1 to 1.5 seconds to
complete
2. Pharyngeal
Phase
- elevation and retraction of the velum and
complete closure of the velopharyngeal to prevent passage into the
nasopharynx
- elevation and anterior movement of the hyoid
and larynx
- closure of the larynx at the true vocal folds,
the laryngeal entrance and the epiglottis to prevent material from
entering the airway
- airway entrance is closed for approximately 5
seconds or more with sequential cup drinking
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Special thanks to St.Mary's/Duluth
Clinic (SMDC) Radiology and Speech
Pathology departments for providing the videofluroscopy studies of
the normal adult.