The most common complication of Sub-valvular Aortic Stenosis is -

Ans. is 'a' i.e., Aortic Regurgitation o Aortic regurgitation is the most common complication of subaortic stenosis.o Note that Aortic regurgitation is not a congenital anomaly associated with subvalvular aortic stenosis.# Aortic regurgitation is a complication of subvalvular# The aortic regurgitation appears to be due to thick fibrous tissue on the left ventricular swface of the valve leaflets. The fibrosis is caused by the repetitive trauma from a jet of blood through the stenosis or by the proliferation of the fbroelastic membrane itself.