Heart Failure Exacerbation and NSAID Use in an Older Veteran
Mr. B is 76 years old with HFrEF (EF 30%), hypertension, CKD stage 3a (eGFR 52), and gout. He presents with 3 kg weight gain, dyspnea, and leg edema over one week. His medications are lisinopril 20 mg daily, carvedilol 6.25 mg twice daily, furosemide 40 mg daily, spironolactone 25 mg daily, and indomethacin 50 mg twice daily for gout flare. He also takes over-the-counter naproxen occasionally. His potassium is 5.6 mEq/L, creatinine 1.8 mg/dL (baseline 1.4), and blood pressure 98/60 mmHg. He asks why he feels worse and wants to know if he can just take a water pill.
1. Explain the pathophysiology of his decompensation and identify which medications are contributing. What immediate adjustments are needed?
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NSAIDs cause sodium and water retention, blunt diuretic response, and reduce renal prostaglandins, which lowers GFR and raises potassium, especially with an ACE inhibitor and spironolactone. Indomethacin is the highest-risk NSAID for renal and cardiovascular effects; naproxen adds to the insult. His weight gain, edema, and dyspnea reflect volume overload, while rising creatinine and potassium reflect reduced renal perfusion. Immediate steps: stop indomethacin and naproxen. Hold spironolactone given potassium 5.6 and worsening renal function. Continue carvedilol and lisinopril unless hypotension or hyperkalemia worsens, though lisinopril may need a temporary hold if creatinine climbs further. Increase furosemide temporarily (for example, 40 mg twice daily or a single higher dose) and monitor daily weights, potassium, and creatinine in 3-7 days. Treat gout with colchicine at reduced dose or intra-articular steroids rather than NSAIDs. Avoid adding another nephrotoxin. Educate him that water pills alone will not fix NSAID-induced retention.
2. He asks how to prevent this from happening again. What deprescribing and monitoring plan do you recommend?
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First, remove NSAIDs from his active list and explain why. Offer alternatives for gout: colchicine with renal dose adjustment, low-dose prednisone for short courses, or intra-articular steroid injection; for chronic urate control, consider allopurinol titrated to urate with monitoring. Because he has HFrEF and CKD, avoid NSAIDs entirely and document an allergy/intolerance-style warning. Provide a written heart failure action plan: weigh daily, call if weight rises more than 1 kg in a day or 2 kg in a week, and limit sodium. Review all over-the-counter products at each visit. Monitoring: potassium and creatinine 1-2 weeks after any diuretic or ACE inhibitor change, then every 3-6 months. Recheck EF and symptoms. Coordinate with his gout prescriber so he does not receive another NSAID from a different clinician. This plan addresses both the acute trigger and the system-level risk of fragmented prescribing.