When a patient is taking spironolactone (Aldactone), a drug that blocks the action of aldosterone on the kidney, the nurse will monitor for

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Because aldosterone increases the excretion of potassium, a medication that blocks aldosterone will tend to cause hyperkalemia. Aldosterone also promotes the reabsorption of sodium and water in the renal tubules, so spironolactone will tend to cause increased urine output, decreased or normal serum sodium level, and signs of dehydration.

When a Patient Is Taking Spironolactone (Aldactone), a Drug That