Yuan S M, Guo J Q
Department of Surgery, Fuwai Heart Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, People's Republic of China.
Kaohsiung J Med Sci. 1998 Nov;14(11):691-7.
The right ventricular outflow tract (RVOT) reconstruction with cryopreserved valved homograft conduits was one of the most important methods in the surgical management of congenital heart defects. However, the hemodynamics for long-term conduit failure remain uncertain, and in vitro studies have not been conducted. Based on the surgical patterns of RVOT reconstruction in clinical practice, the compliant silicon elastomers were cast, and the simplified duplicator system was set up. When the system connected with an eight-channel recorder, and driven by a specified software, flow patterns were able to be visualized, and data to be collected. The simplified right heart system was stable and duplicated well as to the characteristics according with laws of similitude in geometry and physiology, although the conduit model is not in accordance with the clinical extracardiac conduit in angulation, length, diameter, curvature and anastomsis fashion. The right heart duplicator system was a prerequisite condition for the successful research of flow fields of the right heart conduits.
使用冷冻保存的带瓣同种异体移植管道进行右心室流出道（RVOT）重建是先天性心脏缺陷外科治疗中最重要的方法之一。然而，长期管道衰竭的血流动力学仍不确定，且尚未进行体外研究。基于临床实践中RVOT重建的手术模式，铸造了顺应性硅弹性体，并建立了简化的复制系统。当该系统与八通道记录仪连接，并由特定软件驱动时，能够可视化血流模式并收集数据。尽管管道模型在角度、长度、直径、曲率和吻合方式上与临床心外管道不一致，但简化的右心系统在几何形状和生理学相似性规律方面是稳定的，并且复制良好。右心复制系统是成功研究右心管道流场的前提条件。
