Question

Coarctation of aorta is most commonly associated with:

• A. Bicuspid aortic valve
• B. PDA
• C. VSD
• D. ASD

Hint:

Think of the valve lesion that most often accompanies aortic narrowing.

Answer 1

The Correct Option is A

Coarctation of the aorta is a localised constriction of the aorta, usually in the region of the ductus arteriosus just beyond the left subclavian artery. The question asks which lesion most often travels with it.

The single most common companion abnormality is a bicuspid aortic valve, in which the aortic valve has two cusps instead of three. This pairing is well recognised and is the highest-yield association to remember.

Looking at the other choices, a patent ductus arteriosus, a ventricular septal defect and an atrial septal defect may all be seen alongside coarctation, but each of these is encountered less often than the bicuspid valve, so none of them is the best answer.

It is also worth recalling that coarctation features in Turner syndrome, yet among the structural cardiac options offered, the bicuspid aortic valve stands out as the most frequent association.

Therefore the correct association is a bicuspid aortic valve.
\[\boxed{\text{Bicuspid aortic valve}}\]