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Sodium, potassium and fluids

A practice question in the style of the MCCQE MCQ exam. Choose your answer to see the explanation.

Which electrolyte replacement also raises serum sodium?

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The answer is D: Potassium.

Potassium given to a patient with hyponatremia raises sodium, so include it when calculating the expected rise.

This question comes from Week 5 of MCC Vault: Kidneys, fluids and blood. That week has 124 more exam-style questions like it, 5 short lessons and 150 flashcards. The course starts free with Week 1 and reaches this topic in week 5, as part of a five-month plan with full mock exams along the way.

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