Disability (Neurologic Status) part 2 {Ans: 14. Assess Pupils (PERRL)}A patient involved in a MVC has sustained a fracture to the second rib of the anterior left chest. Which concurrent injury is most commonly associated with this fracture? A.Blunt cardiac injury B.Brachial plexus injury C.Pneumothorax D.Hemothorax {Ans: B.Brachial plexus injury Rationale A: Blunt cardiac injury is most often associated with sternal fractures. B: First and second rib fractures are most commonly associated with great vessel, head and spinal cord, and brachial plexus injuries. C: Pneumothorax is most commonly associated with sternal fractures, multiple rib fractures, or flail chest. D: Hemothorax is most commonly associated with flail chest of multiple rib fractures.}breathing and ventilation last step {Ans: 11. if intubated begin mechanical ventilation and continue assisted ventilation}double standard criteria** {Ans: 1. alertness and airways 2. breathing 3. circulation 4. disability 5. exposure}In a patient with severe traumatic brain injury, hypocapnia causes which condition? A.Respiratory acidosis B.Metabolic acidosis C.Neurogenic shock D.Cerebral vasoconstriction {Ans: D.Cerebral vasoconstriction Rationale A: Hypercapnia from inadequate ventilation causes respiratory acidosis, not hypocapnia. B: Metabolic acidosis results from tissue hypoperfusion and oxygen deficit, not hypocapnia. C: Neurogenic shock is associated with spinal cord injuries