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Austin-Flint murmur/phenomenon

Etiology: - severe aortic regurgitation Pathology: - murmur of relative mitral stenosis - the murmur occurs due to narrowing of the mitral orifice by the pressure of regurgitant flow on the anterior mitral leaflet Clinical manifestations: - low-pitched rumbling diastolic murmur best heard at the cardiac apex Differential diagnosis: - mitral stenosis - Austin-Flint murmur distinguishable from mitral stenosis by the absence of a loud first heart sound (S1) & absence of an opening snap

Related

aortic insufficiency (AI) mitral stenosis (MS) mitral valve

General

diastolic murmur phenomenon

References

  1. Stedman's Medical Dictionary 26th ed, Williams & Wilkins, Baltimore, 1995
  2. Medical Knowledge Self Assessment Program (MKSAP) 17, 18. American College of Physicians, Philadelphia 2015, 2018.