Seventy-five percent of children with coarctation of the aorta also have a bicuspid aortic valve -a valve that has two leaflets instead of the usual three.

• 的患有主动脉缩窄的儿童同时患有主动脉瓣二叶畸形-主动脉瓣只有两个瓣叶代替了通常的三个瓣叶。