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) Petechia in the anterior chest wallb) Bradycardiac) Fat globules in urined) Occurs after 1st week of polytraumae) Thrmbocytopenia \nSelect and explain. \nA. acd, B. bde, C. cde, D. ace', 'role': 'user'}, {'content': 'Answer: D \nExplanation: "Arterial blood gas analysis reveals hypoxemia and hypocapnia, with subsequent metabolic acidosis in severe\xa0pulmonary embolism. During anaesthesia, end tidal CO2\xa0concentration may fall dramatically because of increased\xa0dead space and reduced cardiac output". _________\xa0Anesthesia & Intensive care\n\nNote : Fat embolism can present as pulmonary embolism when an extensive fat embolism of lung is present.', 'role': 'assistant'}]