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==Overview==
==Overview==
In [[cardiology]], an '''Austin Flint murmur''' is a mid-diastolic, low-pitched rumbling [[murmur]] which is best heard at the [[cardiac]] apex.  It is associated with severe [[aortic regurgitation]].
In [[cardiology]], an Austin Flint murmur is a mid to late low-pitched diastolic rumbling [[murmur]] which is best heard at the [[cardiac]] apex.  It is associated with severe [[aortic regurgitation]].


==Mechanism==
==Mechanism==

Revision as of 15:46, 22 October 2012

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

In cardiology, an Austin Flint murmur is a mid to late low-pitched diastolic rumbling murmur which is best heard at the cardiac apex. It is associated with severe aortic regurgitation.

Mechanism

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.[1]

Classical description

Classically, it is described as being the result of mitral valve leaftlet displacement and turbulent mixing of antegrade mitral flow and retrograde aortic flow:[2]

  • 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.

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Treatment

Aortic valve replacement may be necessary to correct the abnormality if symptomatic.

Eponym

It is named after the 19th century American physician Austin Flint (1812–1886).

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References

  1. Landzberg JS, Pflugfelder PW, Cassidy MM, Schiller NB, Higgins CB, Cheitlin MD (1992). "Etiology of the Austin Flint murmur". J. Am. Coll. Cardiol. 20 (2): 408–13. PMID 1634679.
  2. Austin Flint murmur. gpnotebook.co.uk. URL: http://www.gpnotebook.co.uk/cache/-167378943.htm. Accessed on: June 4, 2007.


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