Next Article in Journal
Electrical Resistivity Measurements for Nondestructive Evaluation of Chloride-Induced Deterioration of Reinforced Concrete—A Review
Next Article in Special Issue
The Effect of Surface Processing on the Shear Strength of Cobalt-Chromium Dental Alloy and Ceramics
Previous Article in Journal
Effect of Different Downward Loads on Canal Centering Ability, Vertical Force, and Torque Generation during Nickel–Titanium Rotary Instrumentation
Previous Article in Special Issue
Innovative Design Methodology for Patient-Specific Short Femoral Stems
 
 
Article

The Effects of the Mechanical Properties of Vascular Grafts and an Anisotropic Hyperelastic Aortic Model on Local Hemodynamics during Modified Blalock–Taussig Shunt Operation, Assessed Using FSI Simulation

1
Department of Computational Mathematics, Mechanics, and Biomechanics, Faculty of Applied Mathematics and Mechanics, Perm National Research Polytechnic University, 614990 Perm, Russia
2
Federal Center of Cardiovascular Surgery, 614990 Perm, Russia
3
Department of Continuum Mechanics and Computing Technologies, Faculty of Mechanics and Mathematics, Perm State National Research University, 614990 Perm, Russia
*
Author to whom correspondence should be addressed.
Academic Editors: Antonio Lamura and Maria Cinefra
Materials 2022, 15(8), 2719; https://doi.org/10.3390/ma15082719
Received: 19 November 2021 / Revised: 18 March 2022 / Accepted: 30 March 2022 / Published: 7 April 2022
Cardiovascular surgery requires the use of state-of-the-art artificial materials. For example, microporous polytetrafluoroethylene grafts manufactured by Gore-Tex® are used for the treatment of cyanotic heart defects (i.e., modified Blalock–Taussig shunt). Significant mortality during this palliative operation has led surgeons to adopt mathematical models to eliminate complications by performing fluid–solid interaction (FSI) simulations. To proceed with FSI modeling, it is necessary to know either the mechanical properties of the aorta and graft or the rheological properties of blood. The properties of the aorta and blood can be found in the literature, but there are no data about the mechanical properties of Gore-Tex® grafts. Experimental studies were carried out on the mechanical properties vascular grafts adopted for modified pediatric Blalock–Taussig shunts. Parameters of two models (the five-parameter Mooney–Rivlin model and the three-parameter Yeoh model) were determined by uniaxial experimental curve fitting. The obtained data were used for patient-specific FSI modeling of local blood flow in the “aorta-modified Blalock–Taussig shunt–pulmonary artery” system in three different shunt locations: central, right, and left. The anisotropic model of the aortic material showed higher stress values at the peak moment of systole, which may be a key factor determining the strength characteristics of the aorta and pulmonary artery. Additionally, this mechanical parameter is important when installing a central shunt, since it is in the area of the central anastomosis that an increase in stress on the aortic wall is observed. According to computations, the anisotropic model shows smaller values for the displacements of both the aorta and the shunt, which in turn may affect the success of preoperative predictions. Thus, it can be concluded that the anisotropic properties of the aorta play an important role in preoperative modeling. View Full-Text
Keywords: hemodynamics; modified Blalock–Taussig shunt; hyperelasticity; anisotropy; fluid–structure interaction hemodynamics; modified Blalock–Taussig shunt; hyperelasticity; anisotropy; fluid–structure interaction
Show Figures

Figure 1

MDPI and ACS Style

Kuchumov, A.G.; Khairulin, A.; Shmurak, M.; Porodikov, A.; Merzlyakov, A. The Effects of the Mechanical Properties of Vascular Grafts and an Anisotropic Hyperelastic Aortic Model on Local Hemodynamics during Modified Blalock–Taussig Shunt Operation, Assessed Using FSI Simulation. Materials 2022, 15, 2719. https://doi.org/10.3390/ma15082719

AMA Style

Kuchumov AG, Khairulin A, Shmurak M, Porodikov A, Merzlyakov A. The Effects of the Mechanical Properties of Vascular Grafts and an Anisotropic Hyperelastic Aortic Model on Local Hemodynamics during Modified Blalock–Taussig Shunt Operation, Assessed Using FSI Simulation. Materials. 2022; 15(8):2719. https://doi.org/10.3390/ma15082719

Chicago/Turabian Style

Kuchumov, Alex G., Aleksandr Khairulin, Marina Shmurak, Artem Porodikov, and Andrey Merzlyakov. 2022. "The Effects of the Mechanical Properties of Vascular Grafts and an Anisotropic Hyperelastic Aortic Model on Local Hemodynamics during Modified Blalock–Taussig Shunt Operation, Assessed Using FSI Simulation" Materials 15, no. 8: 2719. https://doi.org/10.3390/ma15082719

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop