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本文报告法乐四联症肺小动脉病变的定量分析及其临床特征。结果显示，四联症肺小动脉中层随年龄增长至进行性废用性萎缩，其中层厚度与左右肺动脉干的发育、在心功能相关。中层严重萎缩者术后易发生低心排综合症，特别是低年龄中层萎缩者。作者认为，四联症肺小动脉病变与低肺血流量有关，因此四联症宜早期手术，恢复正常的肺血流量，以利于肺小动脉的正常演变。
This article reports the quantitative analysis and clinical features of tetralogy of Fallot pulmonary lesions in patients with tetralogy of Fallot. The results showed that tetralogy of pulmonary arterial middle layer with age to progressive disuse atrophy, which layer thickness and left and right pulmonary artery development, in cardiac function. Severe atrophy in the middle is prone to have a low cardiac output syndrome, especially in the lower middle age atrophy. The authors believe that tetralogy of Fallot disease is associated with low pulmonary blood flow, so Tetanus should be early surgery to restore normal pulmonary blood flow, in order to facilitate the normal evolution of pulmonary arterioles.