USMLE Step 3 Quiz
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A 72-year-old man with CKD stage G4 (eGFR 26 mL/min/1.73m²), heart failure with reduced ejection fraction, and hypertension is seen for a routine clinic visit. His medications include lisinopril, carvedilol, and furosemide. A routine lab check reveals a serum potassium of 5.9 mEq/L. He is asymptomatic, and his ECG shows no acute changes. In addition to dietary counseling, what is the most appropriate long-term management strategy?
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