A model of left ventricular contraction and transmural ventricular deformation

Rafael Beyar, Samuel Sideman

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The authors present a thick-wall ellipsoidal model of the left ventricle (LV) that takes into account its fiber structure in parallel with the well-known physiological properties of the muscle fibers and was constructed to describe both the transmural and global features of ventricular contraction. The model describes systolic function utilizing the force-length and force-velocity relationship of the fibers. The local oxygen consumption is simulated assuming a linear relationship with the area of the stress-length loop and the triangle between the loop and the maximum active force formed locally for each fiber. The model yields the transmural distribution of oxygen demand as a function of the loading conditions, and accounts for twist of the LV over its long axis during ejection. Thus, the model of LV function provides a comprehensive analytic tool to study the complex interactions between parameters of the ventricular function.

Original languageEnglish (US)
Title of host publicationComputers in Cardiology
PublisherPubl by IEEE
Pages15-17
Number of pages3
ISBN (Print)0818621141
StatePublished - Sep 1989
Externally publishedYes
EventProceedings - Computers in Cardiology - Jerusalem, Isr
Duration: Sep 19 1989Sep 22 1989

Other

OtherProceedings - Computers in Cardiology
CityJerusalem, Isr
Period9/19/899/22/89

ASJC Scopus subject areas

  • Software
  • Cardiology and Cardiovascular Medicine

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