Open Access

ARTICLE

Fluid-Structure Interaction in Problems of Patient Specific Transcatheter Aortic Valve Implantation with and Without Paravalvular Leakage Complication

by Adi Azriff Basri^1,6,*, Mohammad Zuber², Ernnie Illyani Basri¹, Muhammad Shukri Zakaria⁵, Ahmad Fazli Abd Aziz³, Masaaki Tamagawa⁴, Kamarul Arifin Ahmad^1,6

1 Department of Aerospace Engineering, Universiti Putra Malaysia, Serdang, 43400, Malaysia
2 Department of Aeronautical and Automobile Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, 576104, India
3 Department of Medicine, Universiti Putra Malaysia, Serdang, 43400, Malaysia
4 Department of Biological Function and Engineering, Kyushu Institute of Technology, Kitakyushu, Japan
5 Fakulti Kejuruteraan Mekanikal, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100, Malaysia
6 Aerospace Malaysia Research Center, Universiti Putra Malaysia, Serdang, 43400, Malaysia

* Corresponding Author: Adi Azriff Basri. Email:

(This article belongs to the Special Issue: Fluid Structure Interaction in Various Engineering Field)

Fluid Dynamics & Materials Processing 2021, 17(3), 531-553. https://doi.org/10.32604/fdmp.2021.010925

Received 07 April 2020; Accepted 29 January 2021; Issue published 29 April 2021

Abstract

Paravalvular Leakage (PVL) has been recognized as one of the most dangerous complications in relation to Transcathether Aortic Valve Implantation (TAVI) activities. However, data available in the literature about Fluid Structure Interaction (FSI) for this specific problem are relatively limited. In the present study, the fluid and structure responses of the hemodynamics along the patient aorta model and the aortic wall deformation are studied with the aid of numerical simulation taking into account PVL and 100% TAVI valve opening. In particular, the aorta without valve (AWoV) is assumed as the normal condition, whereas an aorta with TAVI 26 mm for 100% Geometrical Orifice Area (GOA) is considered as the patient aorta with PVL complication. A 3D patient-specific aorta model is elaborated using the MIMICS software. Implantation of the identical TAVI valve of Edward SAPIEN XT 26 (Edwards Lifes ciences, Irvine, California) is considered. An undersized 26 mm TAVI valve with 100% valve opening is selected to mimic the presence of PVL at the aortic annulus. The present research indicates that the existence of PVL can increase the blood velocity, pressure drop and WSS in comparison to normal conditions, thereby paving the way to the development of recirculation flow, thrombus formation, aorta wall collapse, aortic rupture and damage of endothelium.

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