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: Orthopaedics
[{'content': 'True about fat embolism -a) Seen one week after injuryb) Patechiec) Bradycardiad) Tachycardiae)  ↑ incidence in multiple # \nSelect and explain. \nA. abc, B. bde, C. ace, D. bce', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Clinical features are evident within 1-3 days. About 25 percent of patients develop symptoms within 12 hours and 75 percent within 36 hours.\nEarly warning signs are a slight rise in temperature (pyrexia) and tachycardia.\nThe classical triad of fat embolism syndrome is :-\n\ni) Respiratory symptoms : Dyspnea, tachypnea, cyanosis, ARDS, low PO2.\nii)\xa0\xa0Neurological symptoms : Confusion, disorientation, restlessness, irritation, delirium, convulsion, coma.\niii) Petechial rach : In axilla, neck, periumblical area, conjunctiva of lower lid, retina, front & beck of chest, shoulder.', 'role': 'assistant'}]