2014
DOI: 10.1002/cnm.2656
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A computational fluid dynamics study on hemodynamics for different locations of the distal anastomosis of a bypass nearby a collateral vessel in the femoropopliteal area

Abstract: Revascularization of the femoropopliteal sector is often performed by the placement of a bypass. In this paper, we have studied the effects of hemodynamics on patency of the bypass for different positions of the distal anastomosis close to a collateral artery. Computational fluid dynamics (CFD) are used for this study. The cardiac cycle-averaged wall shear stress (WSS) and oscillation index (OSI) have been analyzed. Low WSS and high OSI may increase the risk of intimal hyperplasia (IH), which may reduce bypass… Show more

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Cited by 5 publications
(7 citation statements)
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“…In many cases, studies have been conducted to analyze the flow in stents and grafts and to build hypotheses on its effect on NIH and restenosis. This has confirmed the hypothesis of low shear stress and abnormal flow patterns leading to NIH in the pulmonary artery (Berdajs et al, 2015), carotid artery (Harrison et al, 2014), coronary arteries (Guerciotti et al, 2016) peripheral arteries (McGah et al, 2012; Rivera et al, 2014). In addition, some studies have focused on specific applications, such as vascular access for hemodialysis, looking at minimizing NIH by finding the optimum conditions for performing arteriovenous fistulae operations.…”
Section: Discussionsupporting
confidence: 60%
“…In many cases, studies have been conducted to analyze the flow in stents and grafts and to build hypotheses on its effect on NIH and restenosis. This has confirmed the hypothesis of low shear stress and abnormal flow patterns leading to NIH in the pulmonary artery (Berdajs et al, 2015), carotid artery (Harrison et al, 2014), coronary arteries (Guerciotti et al, 2016) peripheral arteries (McGah et al, 2012; Rivera et al, 2014). In addition, some studies have focused on specific applications, such as vascular access for hemodialysis, looking at minimizing NIH by finding the optimum conditions for performing arteriovenous fistulae operations.…”
Section: Discussionsupporting
confidence: 60%
“…When studying the blood flow patterns in anastomoses, numerical modeling is wildly used, the results of which in some cases are compared with experimental data [10]. Most in vitro studies in anastomotic models for femoral popliteal bypass surgery were performed using particle image velocimetry (PIV) [11].…”
Section: Introductionmentioning
confidence: 99%
“…A pesar de no ser encontradas, en aquel periodo, descripciones detalladas del empleo del OpenFOAM ® en la hemodinámica arterial, si se logró crear una metodología propia de trabajo, que permitió realizar estudios comparativos para diferentes geometrías y condiciones de contorno, así como validar las simulaciones [162]. Con estos resultados, se consigue el interés de la Fundación Sanitaria Althaia en realizar de forma conjunta con la Universitat Politècnica de Catalunya (UPC) un estudio que permitió emplear la simulación numérica para analizar la hemodinámica en estenosis carotídeas [161].…”
Section: Antecedentes Y Estado Del Arteunclassified
“…Se puede entonces definir, en cada punto de la superficie, un vector unitario n perpendicular a la misma, de manera que el vector tensión en ese punto de la superficie del fluido será t = σ • n y t s = t − (t • n) • n, donde t s representa la tensión tangencial del fluido en cada punto en contacto con la pared interna de la arteria. Al módulo de t s se le conoce como tensión de cizallamiento en la pared arterial y se denomina WSS, 4 ecuación 2.1 [161][162][163].…”
Section: Hemodinámica Y Principales Variables De Utilizadas En La Inv...unclassified
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