Rheumatoid arthritis and osteoarthritis Quiz: Ace Your Exams
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A 58-year-old woman is brought to the emergency department because of shortness of breath and productive cough. The symptoms began one day ago. She reports producing yellowish, non-bloody sputum. Past medical history is notable for rheumatoid arthritis. Temperature is 38.7°C (101.7°F), blood pressure is 130/82 mmHg, and pulse is 75/min. Pulmonary examination reveals decreased breath sounds in the left lower lung. Examination of the hands reveals swelling and mild deformation of the bilateral metacarpophalangeal and proximal interphalangeal joints. Abdominal examination is notable for splenomegaly. Laboratory results are as follows:
The sputum shows Gram-positive staining. Which of the following additional laboratory findings will most likely be present in the patient?
| Laboratory value | Result |
| Complete blood count | |
| Hemoglobin | 10 g/dL |
| Platelets | 400,000/mm3 |
| Erythrocyte sedimentation rate | 84 mm/h |
The sputum shows Gram-positive staining. Which of the following additional laboratory findings will most likely be present in the patient?
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