We've mentioned Mitral Valve Prolapse and Mitral Valve Regurgitation, so when I saw this article, I thought I'd pass it along...Hugs, Teri 
Aortic valve regurgitation
"Aortic valve regurgitation — or aortic regurgitation — is a condition that occurs when your heart's aortic valve doesn't close tightly. Aortic valve regurgitation allows blood that was just pumped out of your heart to leak back into it."
http://www.mayoclinic.com/invoke.cfm?id=DS00419