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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
6 Pt 2
|
| pubmed:dateCreated |
1986-7-24
|
| pubmed:abstractText |
The peripheral circulatory effects of alpha 1-adrenoceptor stimulation with methoxamine hydrochloride were compared with those of alpha 2-stimulation with UK 14304-18 in 12 intact dogs. Doses of each agent were infused to increase systemic vascular resistance and arterial pressure 50 and then 100% above control. Heart rate was controlled with atropine. At the higher dose, methoxamine increased mean aortic pressure (PAo) from a control of 77.3 +/- 1.6 to 152.9 +/- 3.2 mmHg, mean circulatory filling pressure (MCFP) from 8.0 +/- 0.4 to 13.3 +/- 1.3 mmHg, and central blood volume (CBV) from 21.3 +/- 1.1 to 25.9 +/- 1.5 ml X kg-1, whereas cardiac output did not change. UK 14304-18 increased PAo from 78.1 +/- 2.6 to 148.9 +/- 2.7 mmHg, MCFP from 7.9 +/- 0.4 to 10.6 +/- 0.4 mmHg, and CBV from 21.0 +/- 1.1 to 24.1 +/- 1.5 ml X kg-1, whereas cardiac output decreased from 151.7 +/- 9.4 to 126.3 +/- 5.8 ml X kg-1 X min-1. Mean circulatory filling pressure and CBV were higher with methoxamine than with UK 14304-18. Effective vascular compliance, determined by serial measurements of MCFP during ganglionic blockade after rapid changes in blood volume, decreased from a control value of 1.9 +/- 0.1 to 1.3 +/- 0.3 ml X mmHg-1 X kg-1 with methoxamine, but did not change with UK 14304-18 (1.9 +/- 0.1 ml X mmHg-1 X kg-1). At any given change in blood volume, there was a higher MCFP with alpha 1-stimulation compared with alpha 2-stimulation. Both agents decreased unstressed vascular volume.(ABSTRACT TRUNCATED AT 250 WORDS)
|
| pubmed:grant | |
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:chemical | |
| pubmed:status |
MEDLINE
|
| pubmed:month |
Jun
|
| pubmed:issn |
0002-9513
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:volume |
250
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
H1071-8
|
| pubmed:dateRevised |
2007-11-15
|
| pubmed:meshHeading |
pubmed-meshheading:3717360-Animals,
pubmed-meshheading:3717360-Arteries,
pubmed-meshheading:3717360-Blood Volume,
pubmed-meshheading:3717360-Dogs,
pubmed-meshheading:3717360-Ganglia,
pubmed-meshheading:3717360-Hemodynamics,
pubmed-meshheading:3717360-Methoxamine,
pubmed-meshheading:3717360-Nerve Block,
pubmed-meshheading:3717360-Quinoxalines,
pubmed-meshheading:3717360-Receptors, Adrenergic,
pubmed-meshheading:3717360-Regional Blood Flow,
pubmed-meshheading:3717360-Stimulation, Chemical,
pubmed-meshheading:3717360-Vascular Resistance,
pubmed-meshheading:3717360-Veins
|
| pubmed:year |
1986
|
| pubmed:articleTitle |
Alpha 1- and alpha 2-adrenoceptor stimulation: changes in venous capacitance in intact dogs.
|
| pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Research Support, U.S. Gov't, Non-P.H.S.,
Research Support, Non-U.S. Gov't
|