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': 'Induction agent of choice in a child with cyanotic hea disease ? \nSelect and explain. \nA. Thiopentone, B. Ketamine, C. Halothane, D. Midazolam', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Ketamine In cyanotic hea disease (right to left shunt), systemic vascular resistance should be increased by anaesthetics --> ketamine is the anaesthetic of choice. In acyanotic hea disease (left to right shunt), systemic vascular resistance should be decreased --> volatile anaesthetics (isoflurane, sevoflurane or desflurane) should be used", 'role': 'assistant'}]