Besides aortic stenosis, the most common congenital defect of the aortic valve is the bivalve aortic valve instead of tri-valve or tri-cusp. People who have this will have a murmur however diagnosis is after an echocardiogram not an EKG. Over the years this congenital defect forms an ascending aortic aneurysm and that aneurysm needs to be fixed first. The function of the valves is identified from the echocardiogram. No one is mentioning this