This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
Coarctation of aoa is most commonly associated with - 
Select and explain. 
A. VSD, B. PDA, C. Bicuspid aoic valve, D. ASD
C: Bicuspid aoic valve
Answer: C: Bicuspid aoic valve 
Explanation: Ans. is 'c' i.e., Bicuspid aoic valve o 98% of coarctation of aoa is Juxta-ductal (at the origin of ductus aeriosus just below the origin of subclan aery). o Bicuspid aoic valve is associated in more than 70% of patients. o It is also associated with : ----> PDA, VSD, ASD, TGA, Hypoplastic left hea o It is the most common CHD seen in Turner syndrome.