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Loop diuretic hypokalaemia — GPhC CRA MCQ

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HardCardiovascular TherapeuticsLoop diuretic hypokalaemiaGPhC CRA

A patient taking furosemide 80 mg daily for heart failure reports weakness; recent potassium is 2.9 mmol/L. What monitoring is required?

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Correct answer: B — Check potassium urgently and contact the prescriber

Symptomatic hypokalaemia on a loop diuretic needs prompt electrolyte assessment and prescriber action. This makes check potassium urgently and contact the prescriber the single best answer in this scenario. The other options would either miss the key safety issue, delay appropriate review, or fail to meet the relevant clinical or professional requirement.

Reference: BNF