title: Aortic regurgitation past 50.
mesh_terms: D000368:Aged; D000375:Aging; D001014:Aortic Aneurysm; D001019:Aortic Rupture; D001022:Aortic Valve Insufficiency / Q000145:classification / Q000000981:diagnostic imaging* / Q000209:etiology*; D001027:Aortography; D003937:Diagnosis, Differential; D004697:Endocarditis, Bacterial / Q000150:complications; D006801:Humans; D008875:Middle Aged; D010701:Phonocardiography; D012214:Rheumatic Heart Disease / Q000150:complications