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Loop diuretic hypokalaemia — GPhC CRA MCQ

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ModerateCardiovascular TherapeuticsLoop diuretic hypokalaemiaGPhC CRA

A care home resident has furosemide increased from 20mg to 40mg each morning for oedema. The resident also takes digoxin. The GP asks what safety check should be arranged. What monitoring is required?

Educational content. Not a substitute for clinical judgement or local policy.

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Correct answer: A — Check urea, electrolytes and renal function

Loop diuretics can cause electrolyte disturbances and renal function changes after dose escalation. Hypokalaemia increases the risk of digoxin toxicity. The other tests do not address the main foreseeable medicine-related risk.

Reference: BNF; NICE CKS