The Austin Flint Murmur

  • Mark Real
  • Mary Jane Reen


The Austin Flint murmur (AF) is a mid-diastolic murmur secondary to severe aortic regurgitation (AR). Because it is best heard at the apex of the heart, it can be mistaken for mitral stenosis (MS). While the etiology of AF is not completely understood, it is agreed that AF is not due to functional MS. Commonly accepted mechanisms for AF include turbulent flow, mitral valve fluttering, and septal bulging. While often found in asymptomatic patients, AF can indicate severe AR.


Austin Flint murmur Severe aortic regurgitation Mid-diastolic murmur 

Supplementary material

310603_1_En_12_MOESM1_ESM.mp4 (29.8 mb)
Video 12.1 Austin Flint Murmurs, as reported by Dr. W. Proctor Harvey (File 221 from Clinical Cardiology by W. Proctor Harvey, MD, MACC, Jules Bedynek, MD, and David Canfield and published by Laennec Publishing Inc., Fairfield, NJ. Used with permission and copyrighted by Laennec Publishing, Inc. All rights reserved.) (MP4 30475 kb)


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Copyright information

© Springer-Verlag London 2015

Authors and Affiliations

  1. 1.Georgetown University School of Medicine, Georgetown University HospitalWashingtonUSA

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