This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cerebrovascular Diseases, Subject name: Surgery
[{'content': 'After how many days does Delayed ischemic neurological deficit occurs in SAH? \nSelect and explain. \nA. 1, B. 7, C. 15, D. 30', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Delayed ischemic neurological deficit refers to the focal neurological deficits which occurs between 3 and 10 days (avg. 7 days) after the SAH. It is caused by cerebral vasospasm which correlates with the amount of bleeding in subarachnoid space It is managed with nimodipine &IV fluids. Prevention of hypoxia and hypotension along with control of ICP is helpful', 'role': 'assistant'}]