This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Epilepsy and EEG, Subject name: Medicine
[{'content': '29-year old, pregnant primigravida in 4th month, has a history of Juvenile myoclonic epilepsy. She has been regularly taking sodium valproate and is now seeking an opinion for her anti-epileptic regimen. What would you suggest her? \nSelect and explain. \nA. Immediately taper Valproate and sta Lamotrigine, B. Continue Valproate with monitoring of drug level, C. Switch to Carbamazepine, D. Add Lamotrigine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Patient is in the second trimester of pregnancy. Organogenesis occurs in early pregnancy and the damage may have already occurred. Fetus may already be having an NTD and hence there is no point in changing her treatment plan. If patient had presented when she was planning her pregnancy, we should gradually reduce Valproate dosage and initiate Lamotrigine.', 'role': 'assistant'}]