<prompt> 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 isTracheostomyIPPV with intubationFixation of ribsStrapping of chest  <response>: Flail chest in fracture of 3 or more continuous ribs.Paradoxical respiration is when during inspiration chest moves inwards and vice versa. 