system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 30-year-old man presents with fever, malaise, and severe pain in his right wrist and left knee for the last 2 days. He describes the pain as 8/10 in intensity, sharp in character, and extending from his right wrist to his fingers. He denies any recent inciting trauma or similar symptoms in the past. His past medical history is unremarkable. He is sexually active with multiple partners and uses condoms inconsistently. The vital signs include blood pressure 120/70 mm Hg, pulse 100/min, and temperature 38.3°C (101.0°F). On physical examination, the right wrist and left knee joints are erythematous, warm, and extremely tender to palpation. Both joints have a significantly restricted range of motion. A petechial rash is noted on the right forearm. An arthrocentesis is performed on the left knee joint. Which of the following would be the most likely finding in this patient?
assistant
Arthrocentesis aspirate showing minimal, purulent joint effusion with negative culture