<prompt> Which is not a feature of chronic mitral regurgitation?Mid-diastolic murmurWide split S2PanSystolic murmur radiating to axillaNarrow split S1  <response>: Mitral Regurgitation, the extra blood that flows into left atrium has to come back to left ventricle during diastolic phase. This leads to mid diastolic murmur .Choice A is Correct. Due to early A2, wide Split S2 is heard. Choice B is correct The most characteristic auscultatory finding is grade 36 pansystolic murmur. Choice C is correct. Narrow split S1 is a feature of mitral Stenosis. 