Left Ventricular Stresses in the Intact Human Heart

A set of stress differential equations of equilibrium is presented for a thick prolate spheroid which is the assumed shape for the left ventricle. An analysis for the stresses in the ventricular wall indicates that maximum stresses occur at the inner layers and decrease to a minimum at the epicardia...

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Bibliographic Details
Published inBiophysical journal Vol. 9; no. 2; pp. 189 - 208
Main Author Mirsky, I.
Format Journal Article
LanguageEnglish
Published United States Elsevier Inc 01.02.1969
Subjects
Aortic Valve Insufficiency - physiopathology
Biomechanical Phenomena
Computers
Heart Diseases - physiopathology
Heart Function Tests
Heart Ventricles - physiopathology
Humans
Mitral Valve Insufficiency - physiopathology
Models, Theoretical
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Summary:A set of stress differential equations of equilibrium is presented for a thick prolate spheroid which is the assumed shape for the left ventricle. An analysis for the stresses in the ventricular wall indicates that maximum stresses occur at the inner layers and decrease to a minimum at the epicardial surface, a result that is partially validated by experiment. Simple expressions are available for the evaluation of maximum stresses which occur at the equator and are suitable for small laboratory-oriented digital computers employed in the clinical evaluation of patient status. The surprising result is that Laplace's law yields practical values for mean stresses in thick-walled ventricles.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:0006-3495
1542-0086
DOI:10.1016/S0006-3495(69)86379-4