期刊
COMPUTER METHODS IN BIOMECHANICS AND BIOMEDICAL ENGINEERING
卷 24, 期 4, 页码 375-383出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/10255842.2020.1817409
关键词
Transcatheter aortic valve; fluid-structure interaction; finite element analysis; paravalvular leakage
The success of TAVR procedures heavily relies on the calcification patterns present in the aortic valve, with different locations of calcific deposits leading to varying degrees of paravalvular leakage. Models with deposits along the cups coaptation showed mild PVL, while those with deposits along the attachment line resulted in moderate PVL.
Transcatheter aortic valve replacement (TAVR) strongly depends on the calcification patterns, which may lead to a malapposition of the stented valve and complication onsets in terms of structure kinematics and paravalvular leakage (PVL). From one anatomical-resembling model of the aortic root, six configurations with different calcific deposits were built. TAVR fluid-structure interaction simulations predicted different outcomes for the different calcifications patterns in terms of the final valve configuration in the implantation site and the PVL estimations. In particular models with deposits along the cups coaptation resulted in mild PVL, while those with deposits along the attachment line in moderate PVL.
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