Blood Flow Simulations In Patient-specific
Coronary Bypass Grafts
Author(s)
E. S. Bernad, M. Craina & S. I. Bernad
Abstract
The purpose of this paper was to investigate the hemodynamic parameters
associated with the blood flow in failed coronary venous bypass grafts using a
computational fluid dynamics (CFD) technique. A narrowed section creates
bypass graft constriction and disturbed flow. This change of the flow direction
alters significantly the local hemodynamic parameters. In this paper, a patient
specific three-dimensional bypass model is used to investigate blood flow in
narrowed venous bypass grafts so as to understand the detailed flow physics of
the transition to turbulence downstream of the graft narrowed section. Results of
the simulation show that successive curvature and sudden narrowing of the
bypass graft induce disturbance of the flow profile that produces high local wall
shear stress (WSS) and large recirculation regions. Both these parameters create
favorable conditions for the initiation of graft failure.
Keywords: coronary artery diseases, bypass graft, numerical simulation.
Keywords
Keywords: coronary artery diseases, bypass graft, numerical simulation.
Related Book
Other papers in this volume
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