| Left ventricular flow from apex to base during systole and isovolumic relaxation in a patient with hypertrophic cardiomyopathy and midventricular obstruction. | |
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MedLine Citation:
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PMID: 1782938 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The occurrence of a left ventricular anterograde flow velocity (maximal: 3.9 m.s-1) is demonstrated in a 32-year-old patient with hypertrophic cardiomyopathy and midventricular obstruction, beginning at early systole and persisting throughout the isovolumic relaxation. Cardiac catheterization with simultaneous dual high fidelity pressure measurements in the apical and basal chambers confirmed the presence of the Doppler maximal instantaneous pressure gradient of 60 mmHg. Contrast left ventricular angiography excluded apical dyskinesia. In the two intracavity compartments, isovolumic relaxation time and the time constant of pressure decay (tau) were abnormal whereby tau was more delayed in the apical than in the basal portion. The presence of an apical high pressure zone during systole with impeded and delayed emptying through the midventricular obstacle and the late onset and prolongation of relaxation are thought to be the cause of the intraventricular flow from apex to base lasting from early systole throughout isovolumic relaxation. |
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Authors:
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G Sütsch; R Jenni; H P Krayenbühl |
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Publication Detail:
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Type: Case Reports; Journal Article; Review |
Journal Detail:
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Title: European heart journal Volume: 12 ISSN: 0195-668X ISO Abbreviation: Eur. Heart J. Publication Date: 1991 Oct |
Date Detail:
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Created Date: 1992-03-17 Completed Date: 1992-03-17 Revised Date: 2005-11-16 |
Medline Journal Info:
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Nlm Unique ID: 8006263 Medline TA: Eur Heart J Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 1132-9 Citation Subset: IM |
Affiliation:
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Department of Internal Medicine, Medical Policlinic, Cardiology, University Hospital Zürich, Switzerland. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Blood Flow Velocity Cardiomyopathy, Hypertrophic / complications, physiopathology*, ultrasonography Cineangiography Echocardiography, Doppler Heart Catheterization Heart Ventricles / physiopathology, ultrasonography Humans Male Myocardial Contraction / physiology* Pressure Regional Blood Flow Systole / physiology Ventricular Function, Left / physiology* Ventricular Outflow Obstruction / complications, physiopathology*, ultrasonography |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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