HYBRID EVENT: You can participate in person at Paris, France or Virtually from your home or work.

2nd Edition of International Heart Congress

June 20-22,2024 | Hybrid Event

June 20 -22, 2024 | Paris, France
Heart Congress 2023

Computational hemodynamic study of systemic-to-pulmonary arterial shunt with different design of conduit position.

Jinlong Liu, Speaker at Heart Congress
Shanghai Jiao Tong University, China
Title : Computational hemodynamic study of systemic-to-pulmonary arterial shunt with different design of conduit position.


Object: Different types of systemic-to-pulmonary arterial shunts are used as the palliative treatment for the first-staged procedure of congenital heart disease (CHD). Although the surgical techniques improved over the years, the position of the conduit implanted between the systemic circulation and the pulmonary artery is still one of the controversial issues. In the present study, we investigate the hemodynamic features in four types of systemic-to-pulmonary arterial shunts with various implantation positions. Methods: A modified central shunt with a conduit of 4 mm in diameter was reconstructed based on the patient-specific medical images. The technique of computer-aided design (CAD) was employed to perform the virtual procedures according to the initial vascular structures. The geometric models of modified Blalock-Taussig (mB-T) shunt, Melbourne shunt as well as central shunt with a relatively long U-shaped conduit were acquired. Pulsatile simulations and the hemodynamic analysis were done to capture the physiological information of blood flow using the method of computational fluid dynamics (CFD). Results: The local hemodynamic features in different models were demonstrated by pressure, streamlines, wall shear stress (WSS), blood flow distribution and energy loss. The pulmonary flow distribution changed as the conduit position varied. But the flow distribution between bilateral lungs was more balanced in the mB-T shunt and modified central shunt with a short conduit, compared to that in the U-shaped central shunt and Melbourne shunt. Relatively higher pressure drops and WSS were generated in almost all the conduits. Conclusion: The mB-T shunt exhibits proper pulmonary perfusion and balanced pulmonary flow distribution. The conduit implanted between the first branch of aortic arch and the pulmonary artery branch, is associated with better performance in hemodynamics. The numerical simulation is a useful approach for the investigation of local hemodynamics and the evaluation of the different types of systemic-to-pulmonary arterial shunts.


Dr. Jinlong Liu studied Power Machinery and Engineering at Shanghai Jiao Tong University, China and graduated as MS in 2008. He then joined the research group of Prof. Mitsuo Umezu and Prof. Itsu Sen at TWIns for Advanced Biomedical Sciences, ASMew Lab., Waseda University, Japan, and received his PhD degree in 2012. After two-year postdoctoral fellowship supervised by Dr. Jinfen Liu at the Department of Cardiothoracic Surgery, Shanghai Children’s Medical Center (SCMC), China, he obtained the position of an Associate Professor at SCMC. He has published more than 80 research articles in both SCI(E) and Chinese journals.