This study investigates the hemodynamic impact of stenosis in coronary distal side-to-side anastomoses using computational fluid dynamics (CFD) simulations.

The research demonstrates how restrictive anastomotic geometry can generate disturbed flow patterns, flow separation, low wall shear stress, and elevated oscillatory shear index, all of which are associated with intimal hyperplasia and potential graft failure. The study further proposes geometric thresholds that may contribute to improved surgical planning and graft design in coronary artery bypass procedures.

Kenichi Kamiya, Yukihiro Nagatani, Kohei Suzuki, Shohei Miyazaki, Shota Takano, Susumu Nakata, Yoshiyuki Watanabe, Tomoaki Suzuki, "Computational Fluid Dynamics Simulation of Hemodynamic Impact and Geometric Thresholds in Stenotic Coronary Distal Side-to-Side Anastomoses", Journal of Cardiac Surgery, vol. 2026 (2026) https://doi.org/10.1155/jocs/7598433.