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目的探讨深低温保存的同种异体带瓣管道(valved homograft conduit,VHC)在重建小儿右室流出道(right ventricular outflow tract,RVOT)中耐久性情况,及影响其耐久性的危险因素。方法 1989年 11月至2003年7月用VHC重建RVOT,随访65例次临床情况、心电图、X线胸片、心脏超声和心脏MRI。借此了解病儿体内VHC钙化、梗阻和反流情况。用现代统汁方法分析影响VHC耐久性的危险因素。结果 65例次中VHC中位生存时间10．9年,管道生存最长时间12．8年。结论小年龄(≤4岁)、低体重 (≤10 kg)和主动脉VHC是影响VHC耐久性的危险因素。
Objective To investigate the endurance of valved homograft conduit (VHC) preserved in deep hypothermia in reconstruction of right ventricular outflow tract (RVOT) in children and its risk factors. Methods From November 1989 to July 2003, RVOT was reconstructed with VHC. The clinical data of 65 cases were followed up, including electrocardiogram, X-ray, echocardiography and cardiac MRI. To understand the sick children in vivo VHC calcification, obstruction and reflux. Analysis of the risk factors affecting the durability of VHC using the modern method. Results The median survival time of VHC in 65 cases was 10.9 years, and the longest time of pipeline survival was 12.8 years. Conclusion Small age (≤4 years), low body weight (≤10 kg), and aortic VHC are risk factors for the durability of VHC.