Case 2 A 20-year-old asymptomatic Chinese boy was found to have grade 3/6 diastolic murmur at the left sternal border.
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.