Austin Flint murmur
In cardiology, an Austin Flint murmur is a low-pitched rumbling heart murmur which is best heard at the cardiac apex. It can be a mid-diastolic or presystolic murmur It is associated with severe aortic regurgitation, although the role of this sign in clinical practice has been questioned.
Echocardiography, conventional and colour flow Doppler ultrasound, and cine nuclear magnetic resonance (cine NMR) imaging suggest the murmur is the result of (aortic regurgitant) flow impingement on the inner surface of the heart, i.e. the endocardium.
Displacement: The blood jets from the aortic regurgitation strike the anterior leaflet of the mitral valve, which often results in premature closure of the mitral leaflets. This can be mistaken for mitral stenosis.
The Austin Flint murmur is named after the 19th century American physician Austin Flint (1812–1886). Ironically, he disapproved of associating any physical sign with the name of the original describer. As written by him “So long as signs are determined from fancied analogies, and named from these or after the person who describes them, there cannot but be obscurity and confusion.”
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- Landzberg JS, Pflugfelder PW, Cassidy MM, Schiller NB, Higgins CB, Cheitlin MD (1992). "Etiology of the Austin Flint murmur". Journal of the American College of Cardiology 20 (2): 408–413. doi:10.1016/0735-1097(92)90110-9. PMID 1634679.
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- Austin Flint at Who Named It?
- Landid HR, Austin F. His Contributions to the Art of Physical Diagnosis and the Study of Tuberculosus. Bull Johns Hopkins Hosp. 1912;23:182–6.