Aortic Valve Insufficiency [Disease/Finding] D001022 Aortic Valve Incompetence M0001554 Pathological condition characterized by the backflow of blood from the ASCENDING AORTA back into the LEFT VENTRICLE, leading to regurgitation. It is caused by diseases of the AORTIC VALVE or its surrounding tissue (aortic root). 60234000 Aortic Incompetence N0000000443 Aortic Valve Insufficiency C1064 1022261 Aortic Valve Insufficiency Aortic Regurgitation C0003504 Regurgitation, Aortic Valve Heart Valve Diseases [Disease/Finding]