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Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/32979

Title: Tongue pressure modulation during swallowing: Water vs. nectar-thick liquids
Authors: Steele, Catriona M
Bailey, G.L
Molfenter, Sonja M
Keywords: Tongue
Swallowing
Pressure
Manometry
Dysphagia
Viscosity
Issue Date: 2010
Publisher: Journal of Speech, Language & Hearing Research
Abstract: Purpose Evidence of tongue-palate pressure modulation during swallowing between thin and nectar-thick liquids stimuli has been equivocal. This mirrors a lack of clear evidence in the literature of tongue and hyoid movement modulation between nectar-thick and thin liquid swallows. In the current investigation, we sought to confirm whether tongue-palate pressures are modulated between discrete swallows of water and nectar-thick juice. Method Tongue-palate pressures were measured at three sites (anterior, medial and posterior palate)using an adhered 3-bulb pressure strip in 20 healthy, young adults during discrete swallows of water and nectar-thick apple juice. Results Pressure modulation was not noted with respect to pressure amplitudes (in mm Hg), but was identified both in the pressure patterns observed (the sites and number of bulbs activated) and temporal aspects of pressure duration. Conclusions Tongue-palate pressure amplitude modulation does not occur for nectar-thick swallows compared to thin liquid swallows. Modulation does, however, occur with respect to the tonguepalate contact surface area and pressure durations. We introduce the concept of pressure slope as a meaningful way to examine tongue-palate pressure application in swallowing.
URI: http://hdl.handle.net/1807/32979
Appears in Collections:Toronto Rehab Publications

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