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': 'All are used in early generalized convulsive status epilepticus (GCSE) treatment except? \nSelect and explain. \nA. Phenobarbitone, B. Phenytoin, C. Lorazepam, D. Valproate', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Phenobarbitone is not used for GCSE. Rxfor impending and early SE(5-30 min) IV Benzodiazepines: Lorazepam, Midazolam, Clonazepam IV anti-epileptics: Phenytoin, Valproate or Levetiracetam Rx for established and early refractory SE ( 30 min to 48 hours) IV Midazolam or Propofol Late refractory SE (>48 hours) Pentobarbital or Thiopental', 'role': 'assistant'}]