Decrescendo murmurs progressively decrease in intensity. With crescendo—decrescendo murmurs (diamond or kite-shaped murmurs), a progressive increase in intensity is followed by a progressive decrease in intensity. Location refers to where the heart murmur is usually heard best.Click to see full answer. Moreover, what causes crescendo decrescendo murmur?The resultant configuration of this murmur is a crescendo-decrescendo murmur. Late systolic murmurs start after S1 and, if left sided, extend up to S2, usually in a crescendo manner. Causes include mitral valve prolapse, tricuspid valve prolapse and papillary muscle dysfunction.Also Know, what is a systolic ejection murmur? Systolic Heart Murmur. Ejection murmurs are crescendo-decrescendo or diamond-shaped murmurs that may arise from narrowing of the semilunar valves or outflow tracts. In this manner, why is aortic stenosis crescendo decrescendo? Aortic stenosis The condition is described as a harsh crescendo-decrescendo systolic murmur heard best at the right upper sternal border, with radiation of the murmur to the carotid arteries. It may arise from valve calcification over time due to aging or to having a congenital bicuspid aortic valve.What is a harsh murmur?A “harsh” murmur is consistent with high-velocity blood flow from a higher pressure to a lower pressure. “Harsh” is often appropriate for describing the murmur in patients with significant semilunar valve stenosis or a ventricular septal defect.