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': 'In pediatric epidural anaestheisia, volume of local anaesthetic given to cause sacral dermatome block is? \nSelect and explain. \nA. 0.5 -1 ml/kg, B. 2 - 4 ml/kg, C. 5 - 10 ml/kg, D. None', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., 0.5 - 1 ml/kg Two most commonly used local anaesthetics for caudal block in children are :- Bupivacaine -0.25% concentration in dose of 1 ml/kg. Ropivacaine - 0.2% concentration in dose of 1.2 ml/kg. For easy calculation of volume :- 0.5 mUkg for sacral blockade. 0.75 ml/kg for lower thoracic blockade. 1.25 ml/kg for upper thoracic blockade.", 'role': 'assistant'}]