PULSATILE FLOW IN CORONARY BIFURCATIONS FOR DIFFERENT STENTING TECHNIQUES

PULSATILE FLOW IN CORONARY BIFURCATIONS FOR DIFFERENT STENTING TECHNIQUES

García, J.; Manuel, F.; Doce, Y.; Castro, F.; Crespo, A.; Goicolea, J.; Fernández, J. A.

Full Article:

The objective of this work is to analyze the local hemodynamic changes caused in a coronary bifurcation by three different stenting techniques: simple stenting of the main vessel, simple stenting of the main vessel with kissing balloon in the side branch and culotte. To carry out this study an idealized geometry of a coronary bifurcation is used, and two bifurcation angles, 45º and 90º, are chosen as representative of the wide variety of real configurations. In order to quantify the influence of the stenting technique on the local blood flow, both numerical simulations and experimental measurements are performed. First, steady simulations are carried out with the commercial code ANSYS-Fluent, and then, experimental measurements with PIV (Particle Image Velocimetry) obtained in the laboratory are used to validate the numerical simulation. The steady computational simulations show a good overall agreement with the experimental data. Second, pulsatile flow is considered to take into account the transient effects. The time averaged wall shear stress, oscillatory shear index and pressure drop obtained numerically are used to compare the behavior of the stenting techniques.

The objective of this work is to analyze the local hemodynamic changes caused in a coronary bifurcation by three different stenting techniques: simple stenting of the main vessel, simple stenting of the main vessel with kissing balloon in the side branch and culotte. To carry out this study an idealized geometry of a coronary bifurcation is used, and two bifurcation angles, 45º and 90º, are chosen as representative of the wide variety of real configurations. In order to quantify the influence of the stenting technique on the local blood flow, both numerical simulations and experimental measurements are performed. First, steady simulations are carried out with the commercial code ANSYS-Fluent, and then, experimental measurements with PIV (Particle Image Velocimetry) obtained in the laboratory are used to validate the numerical simulation. The steady computational simulations show a good overall agreement with the experimental data. Second, pulsatile flow is considered to take into account the transient effects. The time averaged wall shear stress, oscillatory shear index and pressure drop obtained numerically are used to compare the behavior of the stenting techniques.

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DOI: 10.5151/meceng-wccm2012-18404

Referências bibliográficas

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Como citar:

García, J.; Manuel, F.; Doce, Y.; Castro, F.; Crespo, A.; Goicolea, J.; Fernández, J. A.; "PULSATILE FLOW IN CORONARY BIFURCATIONS FOR DIFFERENT STENTING TECHNIQUES", p-1382-1394. In: In Proceedings of the 10th World Congress on Computational Mechanics [= Blucher Mechanical Engineering Proceedings, v. 1, n. 1]. São Paulo: Blucher, 2014.
ISSN 23580828, DOI 10.5151/meceng-wccm2012-18404