Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
11
pubmed:dateCreated
1985-12-23
pubmed:abstractText
Some physiological responses to head-up tilt and 3 h standing were evaluated in 13 dehydrated subjects. Seven of the subjects proved to be orthostatically intolerant (INT), exhibiting presyncopal symptoms. Before the symptoms manifest themselves the INT subjects had consistently lower (p less than 0.05) systolic blood pressures, generally lower diastolic and pulse pressures, and elevated (p less than 0.05) plasma renin activity (PRA) compared to the tolerant (TOL) subjects. Plasma vasopressin usually increased more in the INT subjects, but appeared to be related to the severity of presyncopal symptoms rather than to the upright posture per se. It is concluded that systolic and pulse pressures, with PRA, may allow discrimination between TOL, and potentially INT individuals; i.e., predict orthostatic intolerance. It is suggested that dehydration could provide a valuable physiological model for elucidating the causes of orthostatic intolerance.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0095-6562
pubmed:author
pubmed:issnType
Print
pubmed:volume
56
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1059-64
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1985
pubmed:articleTitle
Blood pressure and plasma renin activity as predictors of orthostatic intolerance.
pubmed:publicationType
Journal Article