The murmur of aortic regurgitation is a soft, high-pitched, early diastolic decrescendo murmur usually heard best at the third intercostal space on the left (Erb's point) at end expiration while ...

Pulmonic regurgitation produces a murmur that is often indistinguishable from that of AR. PR produces a soft, high-pitched, early diastolic decrescendo murmur heard best at the pulmonic listening ...