Porous medium finite element model of the beating left ventricle

J.M.R.J. Huyghe, M.G.J. Arts, D.H. Campen, van, R.S. Reneman

Research output: Contribution to journalArticleAcademicpeer-review

103 Citations (Scopus)

Abstract

The axisymmetric model describes myocardial tissue as a spongy saturated anisotropic viscoelastic material. It includes torsion around the axis of symmetry, transmural variation of fiber angle and redistribution of intracoronary blood in the myocardial wall. The contractile fiber is taken strain, strain-rate and time dependent. During a normal cycle, equatorial intramyocardial pressure differed by <5 % from peak intraventricular pressure. When redistribution of intracoronary blood pressure was suppressed, peak intramyocardial pressure was found to exeed peak intraventricular pressure by more tnan 30 %. Simulated contraction of an unloaded left ventricle produced similar magnitude ofsystolic intramyocardial pressure as the normal cycle.
Original languageEnglish
Pages (from-to)H1256-H1267
Number of pages12
JournalAmerican Journal of Physiology : Heart and Circulatory Physiology
Volume262
Issue number4
Publication statusPublished - 1992

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