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: Anaesthesia
[{'content': 'Best treatment for post dural puncture headache – \nSelect and explain. \nA. Caffeine, B. NSAIDs, C. Extradural blood patch, D. IV fluid', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Initially conservative treatment is given which includes analgesics (NSAIDs), oral or i.v., fluids, Sumatriptan, cosyntropin, caffeine and recumbent position.\nIf conservative treatment fails, epidural blood patch (PG1 01) can be used. It involves injecting 15-20 ml of autologus blood into the epidural space which stop leakage of CSF by coagulation and mass effect.\nThus, epidural blood patch is the best treatment, but it is not used as first line treatment. Initially, conservative treatment is given.', 'role': 'assistant'}]