Papillary muscles contraction does not change ventricular wall mechanics

Viatcheslav Gurev, James Korte, Omar Hafez, Jean Luc Fattebert, David F. Richards, John J. Rice

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

Abstract

Papillary muscles play a crucial role to support valves in the ventricles. However, much less is known about the role in ventricular wall mechanics. Evidence in the literature is inconclusive, showing both of changes in wall strain and indications of no changes in strain after detachment of papillary muscles. We designed a high-resolution 3D model of canine ventricles to investigate the effects of papillary muscles on strain in the regions overlying papillary muscles. An anatomical model was obtained from in-vitro MRI and a realistic fiber geometry assuming transmural rotation in the ventricular wall. Boundary conditions were either: 1) the attached state in which movements of the papillary muscle tips were restricted to the plane parallel to the base of the ventricles; or 2) the detached state where no constraints were placed on the muscle tips. Strains were measured at locations overlying anterior papillary muscle and compared between attached and detached papillary muscle states. In simulation of typical physiological contractions, we found essentially identical pattern in all strain components in the two cases with minor changes near the anterior papillary muscle. Further studies will be required to generalize the results to more anatomical reconstructions and a wider range of conditions.

Original languageEnglish (US)
Title of host publicationComputing in Cardiology Conference 2015, CinC 2015
EditorsAlan Murray
PublisherIEEE Computer Society
Pages333-336
Number of pages4
ISBN (Electronic)9781509006854
DOIs
StatePublished - Feb 16 2015
Event42nd Computing in Cardiology Conference, CinC 2015 - Nice, France
Duration: Sep 6 2015Sep 9 2015

Publication series

NameComputing in Cardiology
Volume42
ISSN (Print)2325-8861
ISSN (Electronic)2325-887X

Other

Other42nd Computing in Cardiology Conference, CinC 2015
CountryFrance
CityNice
Period9/6/159/9/15

ASJC Scopus subject areas

  • Computer Science(all)
  • Cardiology and Cardiovascular Medicine

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