| Rest and exercise hemodynamic studies in patients with isolated aortic stenosis. | |
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MedLine Citation:
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PMID: 758984 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Hemodynamic data obtained during rest and exercise in 22 patients with aortic stenosis were analyzed. Mean aortic valve gradient for the group did not change significantly during exercise but there was large individual variability. Aortic valve flow increased during exercise in all but 2 patients. There was no correlation between change in gradient and change in flow during exercise. Although the mean calculated aortic valve area for the group did not change significantly during exercise, the calculated area was larger during exercise in most patients. Change in the calculated valve area correlated best with changes in aortic valve flow, left ventricular stroke work index, and the product of left ventricular systolic pressure and stroke volume. This suggests that in some patients there may be a dynamic component to aortic valve obstruction that may vary with changing hemodynamics. |
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Authors:
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J W Richardson; F L Anderson; T J Tsagaris |
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Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: Cardiology Volume: 64 ISSN: 0008-6312 ISO Abbreviation: Cardiology Publication Date: 1979 |
Date Detail:
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Created Date: 1979-03-28 Completed Date: 1979-03-28 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 1266406 Medline TA: Cardiology Country: SWITZERLAND |
Other Details:
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Languages: eng Pagination: 1-11 Citation Subset: IM; S |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Aortic Valve Stenosis / physiopathology* Cardiac Output Coronary Circulation Heart Rate Hemodynamics* Humans Middle Aged Oxygen Consumption Physical Exertion* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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