245. What is Austin Flint murmur ?

Austin Flint murmur is a Diastolic rumble in aortic regurgitation heard at cardiac apex, thought to be due to aortic jet impinging on the mitral valve, causing vibrations and also from simultaneous diastolic filling of the left ventricle from the left atrium and aorta closing the mitral valve in diastole, producing
physiologic stenosis; named after Austin Flint (1812-1886).