title: The Austin Flint murmur and the a wave of the apexcardiogram in aortic regurgitation.
mesh_terms: D000328:Adult; D000368:Aged; D001021:Aortic Valve / Q000503:physiopathology; D001022:Aortic Valve Insufficiency / Q000503:physiopathology*; D001794:Blood Pressure; D002306:Cardiac Volume; D002932:Cineangiography; D006801:Humans