Numerical investigation on flow fields in partially stenosed artery with complete bypass graft: An in vitro study

A numerical study on the effects of anastomotic angle on the flow fields in a stenosed artery with a complete bypass graft

“…As the flow develops to the exit of bypass graft, the velocity in the inner side becomes slower than that in the outer side, which is just opposite to the distribution at the bypass-graft entrance. These flow features are consistent with the discussion in the previous study [22], indicating the principal flow patterns in the bypass graft are not influenced by the variation of anastomotic angles.…”

“…It has been pointed out by researches [20,21] that the influence of the residual blood flow through the stenosed host artery is not negligible at least until 2 weeks after grafting. For simulating the realistic flow situation, Ko et al [22] used a model composed of a partially stenosed artery with a complete bypass graft to analyze the flow fields with numerical methods. In the study, the different flow features in the stenosed artery with different percentage of area lumen axisymmetric stenosis were emphasized.…”

“…In the study, the different flow features in the stenosed artery with different percentage of area lumen axisymmetric stenosis were emphasized. The current study is a sequent investigation of Ko et al [22], and focuses on the flow fields in a 70%-area occluded host artery with a complete bypass graft implanted on it. The major concern is to exploit the effects of anastomotic angles on the flow fields in a partially stenosed artery after grafting.…”

“…All details of the grid-independent tests and the accuracy validation were reported in the previous study of Ko et al [22].…”

Numerical and Physical Models of Distal Anastomosis in Coronary Artery Bypass Grafting

“…Many researchers have analyzed the complex flow patterns in the sapheno-coronary anastomotic region, using various numerical simulation models in an attempt to explain the site of preferential intimal hyperplasia based on the flow disturbances and differential wall stress distribution [5][6][7][8][9][10][11][12][13][14]. However, only a few of these studies have in vitro physical models to verify their numerical models [15][16][17][18][19][20][21][22].…”