Acute Monoarticular Arthritis: The Daily PANCE Blueprint
A 58-year-old man with a history of gout and type 2 diabetes mellitus presents to the emergency department with a 2-day history of progressively worsening pain, swelling, and erythema in his left ankle. The patient reports that the pain is severe, especially when weight-bearing, and he has difficulty walking. He denies recent trauma or injury to the ankle. He has been taking allopurinol regularly for gout control and has not experienced an acute flare in several years. His temperature is 38.1°C (100.6°F), blood pressure is 112/70 mm Hg, and pulse is 95/min. Physical examination reveals a warm, swollen, and erythematous left ankle with limited range of motion due to pain. What is the most appropriate next step in management?
A. Increase the dose of allopurinol
B. Start oral colchicine therapy
C. Perform joint aspiration and synovial fluid analysis
D. Administer intra-articular corticosteroids
E. Prescribe a short course of oral antibiotics
Answer and topic summary
The answer is C. Perform joint aspiration and synovial fluid analysis
Performing a joint aspiration and synovial fluid analysis is the most appropriate next step in managing acute monoarticular arthritis in a patient with a history of gout and diabetes. This procedure helps differentiate between an acute gout flare and septic arthritis, which can present similarly with joint pain, swelling, erythema, and fever. In patients with diabetes, there is an increased risk of infection, including septic arthritis, which requires prompt diagnosis and treatment to prevent joint damage and systemic complications.
Incorrect Answers:
- A. Increase the dose of allopurinol – Increasing allopurinol is not appropriate during an acute attack of gout, as it can exacerbate symptoms. This adjustment is considered for long-term management once the acute episode resolves.
- B. Start oral colchicine therapy – While colchicine is used for treating acute gout flares, it is crucial first to rule out septic arthritis with joint aspiration and synovial fluid analysis, especially given the patient’s fever and systemic symptoms.
- D. Administer intra-articular corticosteroids – Intra-articular corticosteroids can be useful in managing acute gout but should only be considered after septic arthritis has been excluded, as corticosteroids could worsen an infection.
- E. Prescribe a short course of oral antibiotics – Empirical antibiotic therapy is not appropriate without first confirming an infection through synovial fluid analysis. It is essential to identify the cause of the symptoms accurately to guide appropriate treatment.
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