caa a22 4500 475754255 CHVBK 20180406123533.0 cr unu---uuuuu 170329e20001101xx s 000 0 eng 10.1007/s005950070019 doi (NATIONALLICENCE)springer-10.1007/s005950070019 Three-Dimensional Simulation of Coronary Artery Bypass Grafting with the Use of Computational Fluid Dynamics [Elektronische Daten] [Min-Ho Song, Masaru Sato, Yuichi Ueda] In search of an optimal anastomosis conformation in coronary artery bypass grafting surgery and flow visualization, three-dimensional simulation of the anastomosis has been developed with the use of computational fluid dynamics. To simulate the surgery, a Y-figure model with proximal stenosis was developed in three cases according to angles ranging from 10° to 30°. The boundary condition of velocity and flow of the model were given based on the average velocity and flow of coronary artery measured intraoperatively. Using this information, the fluid dynamics of three models were calculated by commercial computation fluid dynamics code. The convergent results showed the least recirculating jet in the 10° anastomosis without back flow into the graft. The total energy loss in the field was most affected in 30° anastomosis. The wall shear stress profile showed maximum values at the heel region where recirculating jet takes place. This simulation suggests that the more acute is the angle of anastomosis, the smaller is the energy loss. Based on this phenomenon, surgery should therefore be designed to obtain as acute an angle as possible in light of the fluid dynamics. Springer-Verlag, 2000 Key words Coronary artery bypass graft nationallicence Three-dimensional simulation nationallicence Fluid dynamics nationallicence Computation nationallicence Song Min-Ho Department of Cardiothoracic Surgery, Nagoya University School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi 466-8550, Japan, JP aut Sato Masaru Research Center of Computational Mechanics, Inc., Tokyo, Japan, JP aut Ueda Yuichi Department of Cardiothoracic Surgery, Nagoya University School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi 466-8550, Japan, JP aut https://doi.org/10.1007/s005950070019 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s005950070019 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Song Min-Ho Department of Cardiothoracic Surgery, Nagoya University School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi 466-8550, Japan, JP aut NATIONALLICENCE 700 1- Sato Masaru Research Center of Computational Mechanics, Inc., Tokyo, Japan, JP aut NATIONALLICENCE 700 1- Ueda Yuichi Department of Cardiothoracic Surgery, Nagoya University School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi 466-8550, Japan, JP aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer