scholarly journals Inflammatory monocyte response due to altered wall shear stress in an isolated femoral artery model

2019 ◽  
Vol 6 (1) ◽  
pp. 109 ◽  
Author(s):  
Aparna A. Kadam ◽  
Robert P. Gersch ◽  
Todd K. Rosengart ◽  
Mary D. Frame
Keyword(s):  
Shear Stress ◽  
Wall Shear Stress ◽  
Femoral Artery ◽  
Inflammatory Monocyte ◽  
Wall Shear

Numerical CFD / FSI Study of Teflon and Dacron for Use in the Femoral Artery Graft Procedure

2019 ◽  
Author(s):  
Sukwinder Sandhu ◽  
Kevin R. Anderson
Keyword(s):  
Shear Stress ◽  
Wall Shear Stress ◽  
Femoral Artery ◽  
Hoop Stress ◽  
Fluid Structure Interaction ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Implant Materials ◽  
Artery Graft ◽  
Wall Shear

Abstract This paper presents Fluid Structure Interaction modeling of candidate implant materials used in the femoral artery graft medical procedure. Two candidate implant materials, namely Teflon and Dacron are considered and modeled using Computational Fluid Dynamics (CFD) and structural Finite Element Analysis (FEA) to obtain Fluid Structure Interaction (FSI) developed stresses within the candidate materials as a result of non-Newtonian blood flowing in a pulsatile unsteady fashion into the femoral artery implant tube. The pertinent findings for a pulsatile velocity maximum magnitude of 0.3 m/s and period of oscillation of 2.75 sec are as follows. For the biological tissue the wall shear stress is found to be 2.15 × 104 Pa, the hoop stress is found to be 1.6 × 104 Pa. For the Teflon implant material, the wall shear stress is found to be 1.177 × 104 Pa, the hoop stress is found to be 2.2 × 104 Pa. For the Dacron implant material the wall shear stress is found to by 3.9 × 104 Pa, the hoop stress is found to be 2.17 × 104 Pa. Based upon the analysis herein the PTFE material would be recommended.

scholarly journals Influence of the femoral artery-graft junction patient-specific geometry on blood flow structure and wall shear stress

2021 ◽  
Vol 2103 (1) ◽  
pp. 012209
Author(s):  
Y F Ivanova ◽  
L G Tikhomolova ◽  
A D Yukhnev ◽  
E M Smirnov ◽  
R V Kalmikova ◽  
...  
Keyword(s):  
Blood Flow ◽  
Shear Stress ◽  
Wall Shear Stress ◽  
Femoral Artery ◽  
Numerical Study ◽  
Common Femoral Artery ◽  
Patient Specific ◽  
Geometrical Parameters ◽  
Artery Graft ◽  
Wall Shear

Abstract The paper presents a comparative numerical study of pulsatory blood flow in five patient-specific models of femoral-popliteal artery anastomosis. Three-dimensional geometric models of a proximal junction of the common femoral artery/graft were constructed on the bases of CT angiography. The influence of junction geometry on the blood flow and wall shear stress is analyzed. The ratio of the measured CFA and graft diameters and the junction angle are considered as the major geometrical parameters. Numerically calculated velocity fields are analyzed, and stagnant zones in the anastomoses flow are identified. Time-averaged distributions of wall shear stress and oscillatory shear index obtained for five patient-specific model are compared.

Wall shear stress in the stented superficial femoral artery in peripheral arterial disease

2014 ◽  
Vol 233 (1) ◽  
pp. 76-82 ◽  
Author(s):  
Oliver Schlager ◽  
Sonja Zehetmayer ◽  
Daniela Seidinger ◽  
Bernd van der Loo ◽  
Renate Koppensteiner
Keyword(s):  
Shear Stress ◽  
Wall Shear Stress ◽  
Peripheral Arterial Disease ◽  
Femoral Artery ◽  
Superficial Femoral Artery ◽  
Arterial Disease ◽  
Wall Shear ◽  
Peripheral Arterial

scholarly journals Wall shear stress mapping for human femoral artery based on ultrafast ultrasound vector Doppler estimations

2021 ◽  
Author(s):  
I‐Chieh Wang ◽  
Hsin Huang ◽  
Wei‐Ting Chang ◽  
Chih‐Chung Huang
Keyword(s):  
Shear Stress ◽  
Wall Shear Stress ◽  
Femoral Artery ◽  
Stress Mapping ◽  
Wall Shear
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