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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1
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pubmed:dateCreated |
1986-4-17
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pubmed:abstractText |
In order to study the influence of sudden left ventricular pressure rise on the calibrated apexcardiogram, 181 acute aortic occlusions were performed during systole in 7 dog experiments. For each beat preceding (CO) an occlusion and each occlusion (OC), peak systolic amplitude of left ventricular pressure (CO: 118.5 +/- 17.8 mm Hg; OC: 205.8 +/- 38.7 mm Hg) and apexcardiogram (CO: 48.8 +/- 16.7 mm Hg; OC: 63.0 +/- 25.8 mm Hg) were measured. Pressure gradients, ratios and surface areas of all tracings were digitally calculated. The cross-correlation function between pressure and apexcardiogram was also calculated in order to determine time lags. Significant correlations were found: between surface ratios and pressure gradient of pressure (r = 0.80, p less than 0.001) and of apexcardiogram (r = 0.79, p less than 0.001); between surface ratios of pressure and surface of apexcardiogram (r = 0.52, p less than 0.001). The data suggest that during isovolumic systole, the time integral of the left ventricular pressure and its change during the ejection phase define to a large extent the general shape and size of the apexcardiogram.
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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:issn |
0008-6312
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
73
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
1-12
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pubmed:dateRevised |
2008-11-21
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pubmed:meshHeading |
pubmed-meshheading:3948199-Animals,
pubmed-meshheading:3948199-Aorta,
pubmed-meshheading:3948199-Constriction, Pathologic,
pubmed-meshheading:3948199-Dogs,
pubmed-meshheading:3948199-Kinetocardiography,
pubmed-meshheading:3948199-Myocardial Contraction,
pubmed-meshheading:3948199-Stroke Volume,
pubmed-meshheading:3948199-Ventricular Function
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pubmed:year |
1986
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pubmed:articleTitle |
Relationship between left ventricular pressure and the calibrated apexcardiogram during abrupt outflow obstruction.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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