This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Anaesthesia
[{'content': 'A 22-year-old man sustains severe blunt trauma to the back. He notes that he cannot move his lower extremities. He is hypotensive and bradycardic. Which of the following is the best initial management of the patient? \nSelect and explain. \nA. Administration of phenylephrine, B. Administration of dopamine, C. Administration of epinephrine, D. Intravenous fluid bolus', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The patient is in neurogenic shock as a result of a spinal cord injury. Neurogenic shock is characterized by loss of sympathetic tone peripherally as well as bradycardia owing to loss of the reflexive increase in hea rate in response to hypotension. Initial treatment is with fluid resuscitation followed by initiation of vasoconstrictors such as dopamine or phenylephrine. Hypovolemia caused by hemorrhage should also be ruled out in trauma patients', 'role': 'assistant'}]