Name of a particular heart defect

I am doing some research about heart defects.  What is the name and defining characteristics of the defect Arnold Schwartzeneggar was born with?  Any help would be greately appreciated.

[CCF CARDIO MD JMF]

Dear Jennifer,

This was a congenital bicuspid aortic valve.  This is when a person is born with an aortic valve that has two cusps rather than three.  In general, people with this condition progressively develope aortic stenosis (narrowing) as well as potentially devloping aortic regurgitation (leakage).