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Describe the Austin flint murmur

1.    It is a low pitched rumbling MDM heard at the apex of heart.
2.    Heard with the bell of stethoscope.
3.    Patient lying in left lateral position.
4.    Austin flint murmur indicate severe AR.
5.    Usually associated with peripheral signs of AR.
6.    In mild to moderate MR no murmur is heard.
7.    In severe AR – mild diastolic murmur with presystolic accentuation is seen.
8.    In very severe AR – Only mild diastolic murmur without  presystolic component is heard.
9.    It is due to the premature mitral valve closure due to increased left ventricular end diastolic pressure.
What is the pathogenesis of Austin flint murmur
          It is produced due to the impact of regurgitant blood flow resulting in incomplete opening of the anterior mitral leaflet.
          Turbulence of blood flow is generated due to the mixing of the anterograde mitral flow with the retrograde flow through the aortic valve.
It is called as diastolic MR. 
Austin flint murmur Vs Mitral stenosis
Mitral stenosis
Austin flint murmur
Atrial fibrillation can occur
Sinus rhythm
Pulmonary hypertension