Question

Using a stethoscope, the physician observed an accentuated first heart sound, an “opening snap” near the beginning of diastole, and a rumbling murmur between S2 and S1.

*What type of murmur is this?

Answer 1

Diastolic murmur is the type of murmur observed between S2 and S1. This murmur starts at or after S2 phase and ends before or at S1 phase. It involves stenosis of atrioventricular valves or regurgitation of semilunar valves. It occurs due to narrowing of atrioventricular valve and regurgitation of aorta. This diastolic murmur is of 3 types:

Early diastolic murmur: It starts at S2 phase and ends before S1 phase.

Mid diastolic murmur: It starts after S2 phase and ends before S1 phase.

Late diastolic murmur: It starts after S2 phase and extends upto S1 phase.

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