Types of Coarctation of the aorta

Infantile type :- aortic stenosis proximal to insertion of ductus arteriosus (preductal).
Adult type :- stenosis is distal to ductus arteriosus (postductal). Associated with notching of the ribs (due to collateral circulation), hypertension in upper extremities, weak pulses in lower extremities,
Associated wilh Turner's syndrome.
Can result in aortic regurgitation.
Check femoral pulses on physical exam.

SO ;

INfantile: IN close to the heart.
ADult: Distal to Ductus. Most commonly associated with bicuspid aortic valve.