结论：小主动脉瓣环者，如果按照常规瓣膜替换顺序，将带来瓣膜座环困难、瓣周漏、主动脉切口出血等并发症。
Conclusion: It is difficult to place prosthetic valve in routine sequence of valve replacement in patients with small aotic annulus and perivalvular leakage and hemorrhage of aotic incision may occur.
用带瓣同种肺动脉或主动脉及人造血管，建立右心室流入道三尖瓣环下方至主肺动脉的外管道。
By using allograft conduit, an external valved conduit was reconstructed between the inlet of the right ventricle and the main pulmonary artery.
用带瓣同种肺动脉或主动脉及人造血管，建立右心室流入道三尖瓣环下方至主肺动脉的外管道。
By using allograft conduit, an external valved conduit was reconstructed between the inlet of the right ventricle and the main pulmonary artery.
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