An aortic stenosis murmur is an unusual sound the heart makes due to a narrowing of the aortic heart valve. The narrowed heart valve restricts blood flow from the heart, which can create a murmur.
Heart murmurs can be present at birth or develop later in life. Some heart murmurs, called innocent hurt murmurs, are harmless. An innocent heart murmur is not a sign of heart disease and doesn’t need ...