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Austin Flint murmur : ウィキペディア英語版 | 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〔Eric J. Topol. (The Topol Solution: Textbook of Cardiovascular Medicine ), Third Edition with DVD, Plus Integrated Content Website, Volume 355. Lippincott Williams & Wilkins, Oct 19, 2006; page 223. ISBN 0781770122〕 or presystolic murmur It is associated with severe aortic regurgitation, although the role of this sign in clinical practice has been questioned.〔 〕 ==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.〔 〕〔 〕
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