yam63(4)_308.pdf 1.36 MB
Yagi, Shunjiro Department of Plastic and Reconstructive Surgery, Tottori University Hospital Researchers DB KAKEN
Sasaki, Takafumi Cardio Flow Design, Inc.
Fukuhara, Takahiro Division of Otolaryngology, Head and Neck Surgery, Department of Sensory and Motor Organs, School of Medicine, Faculty of Medicine, Tottori University Researchers DB KAKEN
Fujii, Kaori Department of Plastic and Reconstructive Surgery, Tottori University Hospital
Morita, Maki Department of Plastic and Reconstructive Surgery, Tottori University Hospital
Suyama, Yoshiko Department of Plastic and Reconstructive Surgery, Tottori University Hospital Researchers DB KAKEN
Fukuoka, Kohei Department of Plastic and Reconstructive Surgery, Tottori University Hospital
Nishino, Teruyasu Cardio Flow Design, Inc.
computational fluid dynamics
[Background] Technical issues in free flap transfer, such as the selection of recipient vessels and the positioning and method of anastomosis of the vascular pedicle, have been the subject of vigorous debate. Recent developments in computational fluid dynamics (CFD) have enabled the analysis of blood flow within microvessels. In this study, CFD was used to analyze hemodynamics in a microanastomosis. [Methods] In the fluid calculation process, the fluid domain modelizes microvessels with anastomosis. The inlet flow conditions were measured as venous waveform, and the fluid is simulated as blood. Streamlines (SL), wall shear stress (WSS), and oscillatory shear index (OSI) at the anastomosis were visualized and analyzed for observing effects from the flow field. [Results] Some flow disruption was evident as the SL passed over the sutures. The maximum recorded WSS was 13.37 Pa where the peak of a suture was exposed in the lumen. The local maximum value of the OSI was 0.182, recorded at the base of the anastomosis on the outflow side. [Conclusion] In the ideal anastomosis, the SL is disrupted as little as possible by the sutures. The WSS indicated that thrombus formation is unlikely to occur at suture peaks, but more likely to occur at the base of sutures, where the OSI is high. Tight suture knots are important in microanastomosis.
Tottori University Medical Press
Yonago Acta Medica
|Current Journal Title||
Yonago Acta Medica
注があるものを除き、この著作物は日本国著作権法により保護されています。 / This work is protected under Japanese Copyright Law unless otherwise noted.
Yagi Shunjiro, Sasaki Takafumi, Fukuhara Takahiro, et al. Hemodynamic Analysis of a Microanastomosis Using Computational Fluid Dynamics. 2020, 63(4). 308-312. doi:10.33160/yam.2020.11.013
Faculty of Medicine/Graduate School of Medical Sciences/University Hospital