000224889 001__ 224889
000224889 005__ 20190603181642.0
000224889 0247_ $$2doi$$a10.1080/10255842.2016.1207171
000224889 022__ $$a1025-5842
000224889 02470 $$2ISI$$a000389823200006
000224889 037__ $$aARTICLE
000224889 245__ $$aComputational comparison of aortic root stresses in presence of stentless and stented aortic valve bio-prostheses
000224889 260__ $$bTaylor & Francis Ltd$$c2017$$aAbingdon
000224889 269__ $$a2017
000224889 300__ $$a11
000224889 336__ $$aJournal Articles
000224889 520__ $$aWe 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 and we also consider the native configuration. For each of these scenarios, we solve the fluid-structure interaction problem arising between blood and aortic root, through Finite Elements. In particular, the Arbitrary Lagrangian-Eulerian formulation is used for the numerical solution of the fluid-dynamic equations and a hyperelastic material model is adopted to predict the mechanical response of the aortic wall and the two prostheses. The computational results are analyzed in terms of aortic flow, internal wall stresses and aortic wall/prosthesis displacements; a quantitative comparison of the mechanical behavior of the three scenarios is reported. The numerical results highlight a good agreement between stentless and native displacements and internal wall stresses, whereas higher/non-physiological stresses are found for the stented case.
000224889 6531_ $$aStentless aortic prosthesis
000224889 6531_ $$afluid-structure interaction
000224889 6531_ $$ageometry deflation
000224889 6531_ $$afinite elements analysis
000224889 700__ $$uUniv Lugano, Inst Computat Sci ICS, Fac Informat, Lugano, Switzerland$$aNestola, M. G. C.
000224889 700__ $$0247986$$g240654$$uPolitecn Milan, Dipartimento Matemat, MOX, Milan, Italy$$aFaggiano, E.
000224889 700__ $$uPolitecn Milan, Dipartimento Matemat, MOX, Milan, Italy$$aVergara, C.
000224889 700__ $$uPolitecn Milan, Dipartimento Matemat, MOX, Milan, Italy$$aLancellotti, R. M.
000224889 700__ $$uOsped L Sacco, Radiol Unit, Milan, Italy$$aIppolito, S.
000224889 700__ $$uOsped L Sacco, Cardiosurg Unit, Milan, Italy$$aAntona, C.
000224889 700__ $$uInt Ctr Relativist Astrophys Network ICRA Net, Rome, Italy$$aFilippi, S.
000224889 700__ $$0240286$$g118377$$aQuarteroni, A.
000224889 700__ $$uOsped L Sacco, Cardiosurg Unit, Milan, Italy$$aScrofani, R.
000224889 773__ $$j20$$tComputer Methods In Biomechanics And Biomedical Engineering$$k2$$q171-181
000224889 909C0 $$xU10797$$0252102$$pCMCS
000224889 909CO $$qSB$$particle$$ooai:infoscience.tind.io:224889
000224889 917Z8 $$x159570
000224889 937__ $$aEPFL-ARTICLE-224889
000224889 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000224889 980__ $$aARTICLE