A 91-year-old patient is being discharged on the diuretic spironolactone (Aldactone). What is the major adverse effect of this type of medication?
A) Hypokalemia
B) Hyperkalemia
C) Gastric irritation
D) Hypertension
B
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The most common adverse effect of potassium-sparing diuretics is hyperkalemia, which can cause lethargy, confusion, ataxia, muscle cramps, and cardiac arrhythmias. Hypokalemia, gastric irritation, and hypertension are not recognized as adverse effects of spironolactone.
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