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A study of motility of normal human gastroduodenal region

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Abstract

A method of recording continuously and simultaneously the intraluminal pressure in the antrum, pylorus, and duodenal bulb has been used to study gastroduodenal motility during intragastric infusion of saline. Twenty-two studies were performed in 15 normal individuals. Two types of contraction were recorded: (1) independent contractions of the individual parts of the gastroduodenal region, and (2) related contractions of the antrum, pylorus, and duodenal bulb, resulting in a concerted contraction of the whole region. The majority of pyloric contractions were part of a concerted contraction of the whole gastroduodenal region during which the pylorus behaved as the terminal part of the antrum. The majority of duodenal contractions were not associated with pyloric contractions, only 21.7% of duodenal contractions coincided with closure of the pylorus. This suggests that under the conditions of this study the pylorus was not acting as a barrier to reflux. An elevated basal pressure was never recorded from within the pylorus; apart from a brief closure during contraction, the pylorus is always open.

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Authors and Affiliations

  1. General Hospital, Steelhouse Lane, B4 6NH, Birmingham, England

    C. M. White FRCS, Valerie Poxon SRN &  J. Alexander-Williams MD, FRCS

Authors
  1. C. M. White FRCS
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  2. Valerie Poxon SRN
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  3. J. Alexander-Williams MD, FRCS
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White, C.M., Poxon, V. & Alexander-Williams, J. A study of motility of normal human gastroduodenal region. Digest Dis Sci 26, 609–617 (1981). https://doi.org/10.1007/BF01367673

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  • DOI: https://doi.org/10.1007/BF01367673

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