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Modeling the macro-structure of the heart: healthy and diseased

Grosberg, Anna and Gharib, Morteza (2009) Modeling the macro-structure of the heart: healthy and diseased. Medical and Biological Engineering and Computing, 47 (3). pp. 301-311. ISSN 0140-0118.

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In a common heart pathology, dilated cardiomyopathy, the ventricular chamber undergoes a complex remodeling that changes the shape of the ventricle and the architecture of the fibers in the myocardium. In order to effectively surgically reconstruct the heart it is necessary to understand the relative impact of these changes on heart function. Here we present a series of simulations that model different pathological changes separately. We use the sensitive relationship between twist of the ventricle and its ejection fraction to judge the functional impact of the different damage types. We show that the anomalies found in the relation between torsion and ejection fraction for dilated cardiomyopathy are predominantly caused by the damage to the architecture of the myofibrils of the heart, rather than gross geometry.

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Additional Information:© International Federation for Medical and Biological Engineering 2009. Received: 28 July 2008. Accepted: 21 December 2008. Published online: 30 January 2009.
Subject Keywords:Dilated cardiomyopathy; Computer simulations; Cardiomechanics; Twist and torsion
Issue or Number:3
Record Number:CaltechAUTHORS:20090828-094428848
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:15391
Deposited By: Ruth Sustaita
Deposited On:14 Sep 2009 17:25
Last Modified:03 Oct 2019 00:57

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