Abstract
Background: Chin-up posture is frequently used to manage oral dysphagia after head and neck cancer. This prospective study investigates the effects of chin-ups on the sequence of pharyngeal swallowing events. Methods: Twelve healthy young adults performed 45 consecutive swallows of 5 mL water across 3 phases on videofluoroscopy: 5 swallows in the neutral head position; 30 swallows during chin-up posture; and 10 swallows in the neutral head position. Swallowing kinematic and bolus flow measures for 9 swallowing events were recorded. Linear trends were analyzed across 30 chin-up swallows; pairwise comparison was used to compare the 3 phases. Results: Time to hyoid peak and laryngeal vestibule closure changed abruptly during chin-up swallowing compared to the initial neutral position. No measure changed across 30 chin-up swallows. Time of hyoid burst decreased upon returning to the neutral position. Conclusion: Our findings indicate that chin-up posture challenges the pharyngeal sequence of events for both swallowing kinematics and bolus flow.
Original language | English (US) |
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Pages (from-to) | 947-959 |
Number of pages | 13 |
Journal | Head and Neck |
Volume | 39 |
Issue number | 5 |
DOIs | |
State | Published - May 2017 |
Keywords
- adaptation
- chin-up
- dysphagia
- head and neck cancer
- swallowing
ASJC Scopus subject areas
- Otorhinolaryngology