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Potassium products in CKD — GPhC CRA MCQ

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ModerateRenal and Hepatic ImpairmentPotassium products in CKDGPhC CRA

A 60-year-old man with heart failure and eGFR 32mL/min/1.73m2 takes spironolactone. He asks to buy potassium citrate mixture for urinary symptoms. His last potassium was 5.1mmol/L. What is the most appropriate action?

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Correct answer: A — Advise against potassium-containing products and refer for assessment

Spironolactone can increase potassium, and renal impairment increases hyperkalaemia risk. Potassium-containing urinary alkalinisers and salt substitutes can further increase potassium. Urinary symptoms should be assessed for infection, retention or other causes.

Reference: BNF