Which valve lesion typically produces a murmur of equal intensity throughout systole?
A) Aortic stenosis
B) Mitral insufficiency
C) Pulmonic stenosis
D) Aortic insufficiency
B) Mitral insufficiency
This description fits a holosystolic murmur. Because aortic and pulmonic stenosis murmurs vary with the flow of blood during systole, they typically produce a crescendo–decrescendo murmur. The murmur of aortic insufficiency represents backleak across the valve in diastole. It is a decrescendo pattern murmur, which gets softer as the pressure gradient decreases.
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