What is the size of the aortic valve?

1.5-2: 1.5 - 2 CM squared is a normal aortic valve area, though body size must be taken into account.

3-4: The normal aortic valve area for a full-sized adult is 3-4 centimeters squared. Once the aortic valve area is less than 2 cm2, a condition called aortic stenosis is present. Once aortic stenosis is present, the valve area can decrease by 0.1 cm2/year. When aortic stenosis is severe, with a valve area of less than 1.0 cm2, cardiac surgery may be necessary.