Investigating the relationships between peristaltic contraction and fluid transport in the human colon using Smoothed Particle Hydrodynamics
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Date
2012
Authors
Sinnott, M
Cleary, P
Arkwright, John W
Dinning, Phillip
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Rights
Crown Copyright 2012 Published by Elsevier, Ltd.
Rights Holder
Crown Copyright
Abstract
Complex relationships exist between gut contractility and the flow of digesta. We propose here a Smoothed Particle Hydrodynamics model coupling the flow of luminal content and wall flexure to help investigate these relationships. The model indicates that a zone of muscular relaxation preceding the contraction is an important element for transport. Low pressures in this zone generate positive thrust for low viscosity content. The viscosity of luminal content controls the localization of the flow and the magnitude of the radial pressure gradient and together with contraction amplitude they control the transport rate. For high viscosity content, high lumen occlusion is required for effective propulsion.
Description
© 2012. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Keywords
Gastrointestinal motility, Smoothed particle hydrodynamics, Peristalsis
Citation
Sinnott MD, Cleary PW, Arkwright JW, Dinning PG. Investigating the relationships between peristaltic contraction and fluid transport in the human colon using Smoothed Particle Hydrodynamics. Computers in Biology and Medicine. 2012 Apr;42(4):492-503. doi: 10.1016/j.compbiomed.2012.01.002.