Austin Flint murmur

The Austin - Flint - noise is a diastolic murmur, which can occur in a aortic regurgitation. The low-frequency noise occurs middiastolisch up präsystolisch and can be auscultated loudest over the apex ( punctum maximum). The auscultation can be difficult to distinguish from that of a mitral stenosis.

According to a popular theory, which was also supported echocardiography, the vibration of the front sail is ( cusp anterior) of the mitral valve due to the impingement of the aortic -related blood stream ( Regurgitationsjet ) but the cause of the Austin - Flint - noise, other proposed mechanisms can also role play. With imaging techniques also the impact of the Regurgitationsjets was shown on the endocardium of the left ventricle and blamed for the Austin - Flint noise.

The diagnostic value of the noise is unclear.

The auscultation was discovered by the American physician Austin Flint in 1859 and described in 1862.