Finally, a third murmur, known as an Austin Flint murmur, may be detected. This is a soft, rumbling, low-pitched, late diastolic murmur which is heard best at the apex.
Auscultation reveals an S3 and a high-pitched, decrescendo early diastolic murmur. Another characteristic diagnostic finding is widened pulse pressure.
Diastolic murmurs heard in other diseases besides AR differ in their characteristics. The murmur of mitral stenosis is distinct from the murmur of AR.