PMID: 8536161Sep 1, 1995Paper

Postural changes in proximal gastric volume and pressure measured using a gastric barostat

Neurogastroenterology and Motility : the Official Journal of the European Gastrointestinal Motility Society
G S HebbardJ Dent

Abstract

A barostat was used to examine the effect of changes in posture on the volume and pressure in a bag positioned in the proximal stomach of 14 normal volunteers. Volumes in the supine position were compared with those in the standing, left lateral and right lateral positions at a constant pressure 2 mmHg above basal intragastric pressure. A separate series of measurements was then used to evaluate the effects of the same postural changes on pressure within the bag whilst its volume was kept constant. Changing from the supine to the left lateral position decreased bag volume by 62% when pressure was controlled; pressure increased by 60% when volume was controlled. In contrast, movement from the supine to the right lateral position resulted in a 68% increase in bag volume and a 31% fall in pressure. Moving from supine to standing had inconsistent effects on bag volume and pressure. There was a negative correlation between the magnitudes of the changes in pressure and volume (r2 = 0.557). The observed effects of posture probably result from changes in the compression of the stomach by abdominal viscera and indicate that subject position must be specified and maintained constant in studies of proximal gastric motor function using a b...Continue Reading

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Citations

Jan 7, 2014·Annual Review of Food Science and Technology·Gail M Bornhorst, R Paul Singh
Feb 8, 2006·Journal of Magnetic Resonance Imaging : JMRI·Reto TreierWerner Schwizer
Jul 21, 2007·Neurogastroenterology and Motility : the Official Journal of the European Gastrointestinal Motility Society·N Q NguyenR H Holloway
Mar 2, 1999·Neurogastroenterology and Motility : the Official Journal of the European Gastrointestinal Motility Society·K C KapurS A Riley
Jan 25, 2007·Neurogastroenterology and Motility : the Official Journal of the European Gastrointestinal Motility Society·S S Shay, R Lopez
Apr 3, 2008·Journal of Immunotoxicology·Gary R Burleson, Florence G Burleson
Aug 21, 2014·PloS One·Javier Fernández-López de PabloAlfred Sanchis Serra
Jul 5, 2011·American Journal of Critical Care : an Official Publication, American Association of Critical-Care Nurses·Melanie Horbal ShusterJorge A Vazquez
Aug 29, 2006·American Journal of Physiology. Gastrointestinal and Liver Physiology·Oliver GoetzeWerner Schwizer
Aug 8, 2006·American Journal of Physiology. Gastrointestinal and Liver Physiology·Ingrid M de ZwartAd A M Masclee
Jul 26, 2006·World Journal of Gastroenterology : WJG·Nam-Q NguyenChristine Feinle-Bisset
Feb 1, 2021·Journal of Visceral Surgery·M SiebertE Poupardin

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