Aortic stenosis
Aortic stenosis (AS ma ọ bụ AoS) bụ mbelata nke ụzọ ọpụpụ nke ventricle aka ekpe nke obi (ebe aorta na-amalite), nke a na-ebute nsogbu.  O nwere ike ime na valvụ aortic yana n'elu na n'okpuru ọkwa a.[1]  Ọ na-akawanye njọ ka oge na-aga.[1]  Mgbaàmà na-abịakarị nwayọọ nwayọọ na-enwe ike imega ahụ́ mbelata na-ebu ụzọ pụta.[1]  Ọ bụrụ na nkụda mmụọ obi, mwepu nke mmụọ, ma ọ bụ obi mgbu obi metụtara na-eme n'ihi AS nsonaazụ ya ka njọ.[1]  Ọdịda mmụọ na-apụtakarị n'iguzo ọtọ ma ọ bụ na-emega ahụ.[1]  Ihe ịrịba ama nke nkụda mmụọ obi gụnyere mkpụmkpụ ume karịsịa mgbe ị dinara ala, n'abalị, ma ọ bụ na-emega ahụ, na ọzịza nke ụkwụ.  A na-akpọ valvụ ahụ na-enweghị mbelata dị ka aortic sclerosis.[1]