True about co-arctation of aoa :
Answer is A (Most common site is distal to the origin of left subclan aery) The most common site of coarctation of aoa is distal to the origin of left subclan aery. Notching occurs on Inferior surface and not on the superior surface. L. V. Hyperophy is prominent and not RV hyperophy. It is the L.V. which is subjected to increased afterload because of the coarctation, and therefore L.V. Hyperophy is the prominent finding. e Most common age of presentation in coarctation of aoa is during infancy or early childhood Only about 20 percent of patients with mild disease present during adolescence and adulthood
Most common site is distal to the origin of the left subclan aery
Most common age of presentation is at 15- 20years
Superior rib notching is due to erosion by dilated collateral vessels
Right ventricular hyperophy is prominent