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: Surgery
[{'content': 'A man presented with fractures of 4th to 10 th ribs and paradoxical respiration after RTA. He is diagnosed to have flail chest and a PaO2 of <70%. Management is \nSelect and explain. \nA. Tracheostomy, B. IPPV with intubation, C. Fixation of ribs, D. Strapping of chest', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Flail chest in fracture of 3 or more continuous ribs.\nParadoxical respiration is when during inspiration chest moves inwards and vice versa.', 'role': 'assistant'}]