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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1
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pubmed:dateCreated |
1992-8-26
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pubmed:abstractText |
The role of the splanchnic circulation in normal subjects during sympathoneural activation induced by stimuli which either raise (mental arithmetic, cold pressor test, isometric exercise) or maintain (head-up tilt) blood pressure has been studied by measuring superior mesenteric artery blood flow using a noninvasive Doppler ultrasound method in 18 normal subjects. Cardiac, systemic and regional haemodynamic changes were simultaneously studied. Blood pressure rose with the pressor tests and was maintained with head-up tilt. There was a significant fall in superior mesenteric artery blood flow with a rise in vascular resistance during each stimulus indicating active constriction. In six subjects, after 2 months measurements were repeated in an identical study. Superior mesenteric artery blood flow measurements in this study were closely correlated with the initial results. These changes, in a large vascular bed, are likely to be of importance in the overall haemodynamic response during sympathoneural stimuli which either raise or maintain blood pressure.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:status |
MEDLINE
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pubmed:month |
Mar
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pubmed:issn |
0959-9851
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
1
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
37-42
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pubmed:dateRevised |
2008-11-21
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pubmed:meshHeading |
pubmed-meshheading:1821664-Adult,
pubmed-meshheading:1821664-Blood Pressure,
pubmed-meshheading:1821664-Cold Temperature,
pubmed-meshheading:1821664-Female,
pubmed-meshheading:1821664-Heart Rate,
pubmed-meshheading:1821664-Hemodynamics,
pubmed-meshheading:1821664-Humans,
pubmed-meshheading:1821664-Male,
pubmed-meshheading:1821664-Mesenteric Arteries,
pubmed-meshheading:1821664-Muscle, Smooth, Vascular,
pubmed-meshheading:1821664-Physical Exertion,
pubmed-meshheading:1821664-Posture,
pubmed-meshheading:1821664-Reference Values,
pubmed-meshheading:1821664-Regional Blood Flow,
pubmed-meshheading:1821664-Thinking
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pubmed:year |
1991
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pubmed:articleTitle |
Noninvasive quantification of superior mesenteric artery blood flow during sympathoneural activation in normal subjects.
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pubmed:affiliation |
Department of Medicine, St Mary's Hospital Medical School, London, UK.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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