Answer to Question 1
ANS: B
Spironolactone is a potassium sparing diuretic that blocks the sodium retaining and potassium and magnesium excreting properties of aldosterone. This results in loss of water, with increased sodium excretion and retention of potassium. Acetazolamide is a carbonic anhydrase inhibitor and does not spare potassium. Furosemide is a loop diuretic. Bumetanide is a loop diuretic and does not spare potassium.
Answer to Question 2
ANS: C
Thiazide diuretics cause a decrease in the level of potassium. The patient taking thiazide diuretics does not need to increase calcium or magnesium intake. Although sodium levels are altered in patients taking thiazide diuretics, patients do not need to increase sodium intake.