Key result
Venous bypass grafts resulted in a more disturbed flow field at the anastomosis and higher vessel wall stresses compared to arterial grafts in a computational fluid-structure interaction analysis.
Why the study?
Does the use of venous versus arterial bypass grafts influence the flow field and vessel wall stress in patient-specific Y-graft computational models?
Population
Patient-specific computational models of multiple coronary artery bypass grafts (Y-grafts)
Comparison
Venous bypass graft model vs Arterial bypass graft model
Design
Preclinical
Authors
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Arterial grafts show favorable hemodynamics in FSI models; leaves open whether this reduces clinical restenosis or failure rates.
Does the use of venous versus arterial bypass grafts influence the flow field and vessel wall stress in patient-specific Y-graft computational models?
Computational fluid-structure interaction analysis suggests that venous bypass grafts experience more disturbed flow and higher wall stress than arterial grafts, providing a biomechanical explanation for their lower long-term clinical patency.
Guerciotti et al. (2017) studied Coronary artery disease. Venous bypass graft vs. Arterial bypass graft was evaluated on Flow field at the anastomosis and stresses in the vessel wall. Venous bypass grafts resulted in a more disturbed flow field at the anastomosis and higher vessel wall stresses compared to arterial grafts in a computational fluid-structure interaction analysis.
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