An early systolic murmur may be caused by all of the following except:

Answer is D (Aoic stenosis) The murmur of Aoic Stenosis is characteristically an ejection systolic murmur Q that occurs in midsystole (stas only sholy after SI and never with SI) when the ventricular pressure becomes high enough to open the semilunar valve. The murmur increases in intensity as the velocity of ejection increases and as ejection declines it decreases. The murmur ends before ventricular pressure falls enough to permit closure of aoic or pulmonary leaflets.