结论婴幼儿法乐氏四联征肺血流减少导致肺细小动脉和肺泡发育异常。

Conclusions the development of pulmonary small arteries and alveoli are directly affected by the diminished pulmonary flow in infants with tetralogy of Fallot.

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手术证实18例均为心内膜垫缺损，其中部分型11例（ 1例并法鲁四联征） ，完全型2例，单心房腔型5例。

Surgical results confirmed ECD in all 18 cases, of which 11 cases were of partial type, 2 were of whole type and 5 were of single atrium type.

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