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': 'A child is brought with drowsiness, decreased deep tendon reflexes and seizures. On examination, the child has a line on gums. There is a history of constipation. Which will be a most appropriate drug that should be used in this child – \nSelect and explain. \nA. EDTA, B. DMSA, C. BAL, D. Pencillarnine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Clinical features of child suggest the diagnosis of lead poisoning with encephalopathy.\n\nChelation therapy for lead poisoning -\n\nGuidelines for selecting children for chelation in lead poisoning are based on blood lead level.\nFour drugs are available-DMSA, EDTA, Penicillamine, BAL.\nDMSA and penicillamine can be given orally while EDTA and BAL can only be administered parenterally.\nChildren with blood lead levels between 44 and 70 should be treated with a single drug. Those with blood levels of 70 or greater require 2 drug treatment.\n\n\nEDTA in combination with either DMSA or BAL for those without encephalopathy.\nEDTA and BAL for those with encephalopathy.', 'role': 'assistant'}]