This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'Drug of choice for primary prophylaxis for acute rheumatic fever? \nSelect and explain. \nA. Erythromycin-1.2 million units, B. Erythromycin-1.2 lakh units, C. Benzathine penicllin-1.2 lakh units, D. Benzathine penicillin-1.2 million units', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Prophylaxis of ARF: 1.primary-To stop streptococcal pharyngitis to procede to ARF In this,Antibiotics are given for a week. DOC-injection benzathine penicillin-1.2 million units(wt>27kgs);0.6 million units(wt<27 kgs). if patient is allergic to penicillins then macrolides are preferred. 2.secondary prophylaxis-To prevent recurrence. given during patient suffering from ARF. DRUG SAME AS PRIMARY-But every (3-4) weeks. if allergic-SULFADIAZINE is given. if also allergic to saulfadiazone,macrolides are preferred.', 'role': 'assistant'}]