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
Large PDA (Patent ductus arteriosus) leads to – 
Select and explain. 
A. Endocardial valvulitis, B. Eisenmenger syndrome, C. CHF, D. All of above
D: All of above
Answer: D: All of above 
Explanation: Endocardial valvulitis (infective endocarditis), CHF and Eisenmenger syndrome, all can develop in PDA.