Oesophageal heat transfer properties indication of segmental blood flow changes during distension

The pain perception to distension of the oesophagus can be explained by activation of receptors responding to mechanical deformation or to distension‐induced ischaemia. The aim of this study was to develop a new method for detection of changes in segmental blood flow during distension based on measu...

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Bibliographic Details
Published in:Neurogastroenterology and motility 2008-04, Vol.20 (4), p.298-303
Main Authors: Liao, D., Frøkjær, J. B., Brock, C., Andersen, S. D., Drewes, A. M., Gregersen, H.
Format: Article
Language:English
Subjects:
Adult
blood flow
Dilatation, Pathologic
distension
Esophagus - blood supply
Esophagus - physiology
Female
Hot Temperature
Humans
Male
Manometry - instrumentation
Manometry - methods
Middle Aged
oesophagus
Pain Threshold
Regional Blood Flow
Sensation - physiology
temperature
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Summary:The pain perception to distension of the oesophagus can be explained by activation of receptors responding to mechanical deformation or to distension‐induced ischaemia. The aim of this study was to develop a new method for detection of changes in segmental blood flow during distension based on measurement of heat transfer. A bag was distended in the distal oesophagus of six healthy subjects followed by cooling or heating of the bag fluid to 5 or 60 °C. After equilibrium, the temperature was allowed to change back to body temperature. The temperature was recorded together with intraluminal ultrasound imaging, allowing assessment of the heat transfer properties at different bag volumes. The heat transfer constants were higher after heating the bag than after cooling the bag (Tukey, P 
ISSN:1350-1925
1365-2982
DOI:10.1111/j.1365-2982.2007.01031.x