劍橋詞典an operation to replace a section of the aorta (= the largest blood vessel ) at a point where it leaves the heart , but keeping the heart valve 瓣膜保留主動脈根部重建 In valve-preserving aortic root repair an artificial graft is used to replace the damaged section of the aorta . 在瓣膜保留主動脈根部重建術(shù)中，一根人工血管支架被置入，取代主動脈受損的部分。 返回 valve-preserving aortic root repair