| Echocardiography: pericardial tickening and constrictive pericarditis. | |
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MedLine Citation:
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PMID: 99019 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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To evaluate the relation between mitral valve motion and left ventricular end-diastolic pressure, the PR-AC interval, an index derived from the electrocardiogram and mitral echogram, and the left ventricular endodiastolic pressure were determined simultaneously in 22 patients undergoing diagnostic cardiac catheterization. Intravenous infusion of dextran or administration of nitroglycerin was used to alter left ventricular end-diastolic pressure to determine if there was a predictive relation between this pressure and the PR-AC interval during acute hemodynamic manipulations. There was a weak negative correlation (r = -0.33, P less than 0.01) between this pressure and the PR-AC interval. At rest a PR-AC interval greater than 0.06 second correctly predicted a left ventricular end-diastolic pressure of less than 20 mm Hg in 15 of 16 subjects. However, in four of six subjects with a PR-AC interval of 0.06 second or less, the end-diastolic pressure was less than 20 mm Hg. After interventions that varied left ventricular end-diastolic pressure by a factor of 2, the PR-AC interval changed slightly or not at all. These data suggest that the PR-AC interval is of limited value in predicting abnormal values or serial changes in left ventricular end-diastolic pressure. |
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Authors:
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J R Lewis; J O Parker; G W Burggraf |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The American journal of cardiology Volume: 42 ISSN: 0002-9149 ISO Abbreviation: Am. J. Cardiol. Publication Date: 1978 Sep |
Date Detail:
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Created Date: 1978-10-27 Completed Date: 1978-10-27 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 0207277 Medline TA: Am J Cardiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 383-7 Citation Subset: AIM; IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Coronary Disease / physiopathology Dextrans / diagnostic use Echocardiography Electrocardiography Female Heart Diseases / physiopathology* Heart Ventricles / physiopathology* Humans Male Middle Aged Mitral Valve / physiopathology* Myocardial Contraction Nitroglycerin / diagnostic use Pulmonary Valve Stenosis / physiopathology |
| Chemical | |
Reg. No./Substance:
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55-63-0/Nitroglycerin; 9004-54-0/Dextrans |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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