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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1
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pubmed:dateCreated |
1986-9-16
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pubmed:abstractText |
The cardiotoxicity and haemodynamic changes induced by IV administration of high doses of SK&F 94120, a novel positive inotrope/vasodilator, were studied in the dog. Inotropism was observed at a dose of 0.375 mg/kg. Mean blood pressure was reduced in a dose-related manner, reaching a nadir of 43.7 mm Hg at 24 mg/kg. Heart rate was increased at doses of 1.5 mg/kg and above. ECG examination revealed a shortening of PR interval and an increase in T-wave amplitude. At doses of 15 mg/kg and above, occasional AV dissociation with accrochage were sometimes seen shortly after the start of the infusion. Ventricular extrasystoles were only seen at doses of 120 mg/kg and above. A dose-related increase in severity and incidence of haemorrhages, deposition of haemosiderin and fibroplasia were seen in the left ventricular endocardium and atrioventricular valves at doses of 15 mg/kg and above. Focal myocardial necrosis, predominantly of the left ventricular papillary muscle, and mild periarteritis of medium-sized extramural arteries, mostly in the right atrium, were seen at doses of 45 mg/kg and above. Intimal proliferation of intra- and extramural coronary vessels was observed. A necrotising peri/panarteritis of these arteries was noted at doses of 200 and 400 mg/kg. The cardiotoxicity observed was considered to be due to the exaggerated pharmacologic effects seen at these high dose levels.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
May
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pubmed:issn |
0340-5761
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
59
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
51-5
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pubmed:dateRevised |
2007-11-15
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pubmed:meshHeading |
pubmed-meshheading:3741144-Animals,
pubmed-meshheading:3741144-Dogs,
pubmed-meshheading:3741144-Electrocardiography,
pubmed-meshheading:3741144-Female,
pubmed-meshheading:3741144-Heart,
pubmed-meshheading:3741144-Heart Rate,
pubmed-meshheading:3741144-Hemodynamics,
pubmed-meshheading:3741144-Male,
pubmed-meshheading:3741144-Myocardial Contraction,
pubmed-meshheading:3741144-Pyrazines,
pubmed-meshheading:3741144-Stimulation, Chemical,
pubmed-meshheading:3741144-Time Factors,
pubmed-meshheading:3741144-Vasodilator Agents
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pubmed:year |
1986
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pubmed:articleTitle |
Cardiotoxicity of a new inotrope/vasodilator drug (SK&F 94120) in the dog.
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pubmed:publicationType |
Journal Article
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