A bicuspid valve has only two flaps, rather than three. Treatment depends on how well the valve works. Subaortic means below the aorta . Subaortic stenosis refers to a narrowing of the left ventricle just below the aortic valve, which blood passes through to go into the aorta. This stenosis limits the flow of blood out of the left ventricle.
Treatment depends on the cause and the severity of the narrowing.
It can include drugs or surgery. Septal defects Some congenital cardiovascular defects let blood flow between the heart's right and left chambers. The two most common types of this defect are atrial septal defect and ventricular septal defect. Two variations are Eisenmenger's complex and atrioventricular canal defect. Many children with ASD have few, if any, symptoms.