Etiology-aortic-stenosis

• Calcific: predominant cause in Pts >70 y; risk factors: HTN, ↑ LDL-C, ↑ Lp(a), ESRD
• Congenital (ie, bicuspid AoV w/ premature calcification): cause in 50% of Pts <70 y
• Rheumatic heart disease (AS usually accompanied by AR and MV disease)
• AS mimickers: subvalvular (HCMP, subaortic membrane) or supravalvular stenosis