Septic arthritis Quiz: Ace Your Exams
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A 63-year-old man presents to the emergency department from an acute rehabilitation center for evaluation of right knee pain and swelling for the past 48 hours. The patient underwent right knee arthroplasty approximately 1 week ago. The patient has been unable to ambulate secondary to pain. Past medical history includes hypertension and obesity. Temperature is 38°C (102.2°F), blood pressure is 98/71 mmHg, pulse is 109/min, respiratory rate is 20/min, and oxygen saturation is 99% on room air. On physical examination, there is a palpable effusion, warmth, marked swelling of the right knee when compared to the left, and severe pain with range of motion. The patient is unable to bear weight without significant pain. Radiographs of the right knee demonstrate periosteal reaction associated with the right knee prosthesis. Which of the following is the best next step in management?
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