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Difficulty: MediumPharmacologic Interventions

A 68-year-old man presents to the clinic with a 2-day history of severe pain, swelling, and redness in his right great toe. He states the pain is so intense he cannot tolerate wearing a shoe or having a bedsheet touch his foot. He experienced a similar episode 3 years ago, during which a joint fluid aspiration confirmed the presence of monosodium urate crystals. His past medical history includes ischemic cardiomyopathy with a left ventricular ejection fraction of 30%, stage 4 chronic kidney disease, and a hospitalized episode of upper gastrointestinal bleeding secondary to a gastric ulcer two years ago. Current medications include carvedilol, furosemide, and pantoprazole. Vital signs are temperature 37.2°C (99.0°F), blood pressure 134/86 mmHg, and pulse 82/min. Physical examination of the right foot shows marked erythema, swelling, and extreme tenderness over the first metatarsophalangeal joint. Recent laboratory studies reveal a serum creatinine of 2.7 mg/dL and an estimated glomerular filtration rate (eGFR) of 24 mL/min/1.73 m 2^2. Which of the following is the most appropriate initial pharmacologic intervention for this patient's acute symptoms?

  1. A
    Allopurinol
  2. B
    Colchicine
  3. C
    Indomethacin
  4. D
    Oral cephalexin
  5. Oral prednisoneAnswer

Answer

Oral prednisone is the most appropriate initial pharmacologic intervention.
The correct intervention is oral prednisone because it is the safest and most effective systemic treatment for an acute gout flare in this highly complex patient. Standard first-line agents for acute gout include NSAIDs, colchicine, and glucocorticoids. However, this patient's advanced chronic kidney disease (stage 4), ischemic cardiomyopathy, and history of severe peptic ulcer disease represent absolute contraindications to NSAID therapy. Furthermore, colchicine clearance is heavily dependent on renal function; using it in a patient with an eGFR of 24 mL/min/1.73 m 2^2 carries an unacceptably high risk of severe toxicity, including fatal neuromyopathy and bone marrow suppression. Glucocorticoids bypass these specific organ toxicities and provide excellent acute anti-inflammatory relief.

Step-by-Step Solution

1
Identify the primary clinical problem.
The patient is presenting with acute monoarticular arthritis of the first metatarsophalangeal joint (podagra), highly consistent with an acute gout flare given his prior crystal-proven history.
Establishing the correct diagnosis guides the selection of acute anti-inflammatory therapies rather than antimicrobial treatments.
2
Review the standard first-line therapies for an acute gout flare.
Standard therapies include nonsteroidal anti-inflammatory drugs (NSAIDs), colchicine, and systemic or intra-articular glucocorticoids.
First-line agents must be evaluated against the patient's specific risk profile.
3
Evaluate the patient's comorbidities to identify absolute or relative contraindications.
The patient has stage 4 chronic kidney disease (CKD), heart failure, and a history of peptic ulcer disease. This rules out NSAIDs (nephrotoxicity, fluid retention, gastrointestinal bleeding) and severely restricts colchicine use (requires normal to mildly impaired renal clearance).
Preventing iatrogenic harm is critical in complex patients with multiple organ system impairments.
4
Select the safest effective pharmacologic intervention.
Glucocorticoids, such as oral prednisone, bypass the renal and severe gastrointestinal risks of NSAIDs and colchicine, making them the safest systemic option for this patient.
Oral prednisone provides rapid anti-inflammatory action without the specific toxicities contraindicated by the patient's existing comorbidities.

Key Concept

In patients presenting with an acute gout flare who have significant contraindications to NSAIDs and colchicine (e.g., severe chronic kidney disease, heart failure, peptic ulcer disease), systemic or intra-articular glucocorticoids are the preferred first-line pharmacologic intervention.
Estimated Time:1m 15s
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Pharmacologic Interventions

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