is not related to aortic dilation in patients with bicuspid stenosis,as) 先天性 as 最常见的原因是二叶主动脉瓣(bicuspid effect of bicuspid aortic valve cusp fusion on aorta wall shear incidence of aortic complications in patients with bicuspid 2 前尖 anterior cusp of bicuspid valve 3 左房室孔 left