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
[{'content': 'Large PDA leads to ? \nSelect and explain. \nA. Endocardial valvulitis, B. Eisenmenger syndrome, C. CHF, D. All of above', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., All of above Patent ductus aeriosus (PDA) Small PDA may not cause any complication but large defect if untread may leads to : Pulmonary hypeension Left to Right shunt leads to too much circulation of blood in lung which leads to pulmonary hypeension. Eisenmenger's syndrome - Large standing pulmonary hypeension leads to permanent lung damage and causes Right to Left shunt. Endocarditis. Arrhythmia Enlargement of hea due to PDA increase risk of arrhythmias", 'role': 'assistant'}]