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Hyperaldosteronism — ABFM Board MCQ

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HardCardiovascularHyperaldosteronismABFM Board

A 46-year-old man has resistant hypertension despite three medications, including a diuretic. Laboratory testing shows potassium of 3.0 mEq/L and bicarbonate of 31 mEq/L. He denies laxative use. Which of the following is the most likely diagnosis?

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Correct answer: C — Primary hyperaldosteronism

Resistant hypertension with hypokalemic metabolic alkalosis suggests primary hyperaldosteronism.

Reference: American Family Physician clinical reviews and AAFP guidance: https://www.aafp.org/pubs/afp.html