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
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 
Select and explain. 
A. Tracheostomy, B. IPPV with intubation, C. Fixation of ribs, D. Strapping of chest
B: IPPV with intubation
Answer: B: IPPV with intubation 
Explanation: Flail chest in fracture of 3 or more continuous ribs.
Paradoxical respiration is when during inspiration chest moves inwards and vice versa.