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': 'Most common cause of death after Total Hip Replacement is - \nSelect and explain. \nA. Infection, B. Pneumonia, C. Anemia, D. Thromboembolism', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Thromboembolic disease (Pulmonary embolism) is the most common cause of death after total hip replacement.', 'role': 'assistant'}]