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: Medicine
[{'content': 'An 18-year-old client is admitted with a closed head injury sustained in a MVA. His intracranial pressure (ICP) shows an upward trend. Which intervention should the nurse perform first \nSelect and explain. \nA. Reposition the client to avoid neck flexion, B. Administer 1 g Mannitol IV as ordered, C. Increase the ventilator’s respiratory rate to 20 breaths/minute, D. Administer 100 mg of pentobarbital IV as ordered.', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The nurse should first attempt nursing interventions, such as repositioning the client to avoid neck flexion, which increases venous return and lowers ICP.\nOptions B, C, and D: If nursing measures prove ineffective notify the physician, who may prescribe mannitol, pentobarbital, or hyperventilation therapy.', 'role': 'assistant'}]