Journal of Applied Physiology
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J Appl Physiol 38: 1161-1164, 1975;
8750-7587/75 $5.00
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Journal of Applied Physiology, Vol 38, Issue 6 1161-1164, Copyright © 1975 by American Physiological Society

ARTICLES

Effect of dry swallows and wet swallows of different volumes on esophageal peristalsis

J. B. Hollis and D. O. Castell

The effect of dry swallows and wet swallows of various volumes on esophageal function was studied in normal subjects. An intraesophageal transducer assembly was used to measure the dynamics of esophageal peristalsis. The strength of esophageal contraction (amplitude) following a 1-ml liquid bolus was similar to that following a dry swallow but was significantly less than that following a wet swallow of a larger volume. There was no difference in strength of esophageal squeeze following swallows ranging from 2 to 20 ml. In addition, a wet swallow was associated with slower wave speed, greater duration of the contraction wave, and later time of appearance of the peristaltic wave in the distal esophagus than a dry swallow. Futhermore, the incidence of peristalsis was greater with a wet swallow than a dry swallow. The results of our studies indicate that although the act of swallowing alone in man initiates peristalsis, afferent information contributes to the regulation of primary peristalsis.


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