Publication

MATHICSE Technical Report : aortic root stresses in presence of stentless and stented aortic valve bio-prostheses

Alfio Quarteroni
2016
Working Papers

Abstract

We provide a computational comparison of the performance of stentless and stented aortic prostheses, in terms of aortic root displacements and internal stresses. To this aim, we consider three real patients; for each of them we draw the two prostheses configurations, which are characterized by different mechanical properties. Moreover, for each patient, we consider also the native configuration. For each scenario, we solve the fluid-structure interaction problem arising between blood and aortic root, through Finite Elements. The results show a better agreement between stentless and native displacements and stresses, with respect to the stented case.

Official source

https://infoscience.epfl.ch/entities/publication/d4fe174e-1372-45c1-be53-737b1ec3bd72

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Alfio Quarteroni
2016
Working Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/d4fe174e-1372-45c1-be53-737b1ec3bd72

About this result

Related concepts (29)

Aortic dissection

Aortic dissection (AD) occurs when an injury to the innermost layer of the aorta allows blood to flow between the layers of the aortic wall, forcing the layers apart. In most cases, this is associated with a sudden onset of severe chest or back pain, often described as "tearing" in character. Also, vomiting, sweating, and lightheadedness may occur. Other symptoms may result from decreased blood supply to other organs, such as stroke, lower extremity ischemia, or mesenteric ischemia.

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Aortic regurgitation (AR), also known as aortic insufficiency (AI), is the leaking of the aortic valve of the heart that causes blood to flow in the reverse direction during ventricular diastole, from the aorta into the left ventricle. As a consequence, the cardiac muscle is forced to work harder than normal.

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MATHICSE Technical Report : aortic root stresses in presence of stentless and stented aortic valve bio-prostheses

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