This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Trauma, Subject name: Surgery
[{'content': 'All are criteria for CT head in trauma Except \nSelect and explain. \nA. GCS <13 at presentation, B. GCS 14 at 2 hours, C. Detion of mouth, D. One episode of vomiting', 'role': 'user'}, {'content': 'Answer: D \nExplanation: More than one episode requiredIndications for CT head in traumaGCS <13 at any pointGCS 13 or 14 at 2 hoursFocal neurological deficitSuspected open, depressed or basal skull fractureMore than one episode of vomitingAny patient with a mild head injury over the age of 65 years or with a coagulopathy, for instance, warfarin use, should be scanned urgentlyDangerous mechanism of injury or antegrade amnesia >30 minutes warrants CT within 8 hoursBailey and Love 26e 314', 'role': 'assistant'}]