Answer to Question 1
ANS: C
Potassium-sparing diuretics increase the excretion of water and sodium but save potassium. These drugs are used for patients with kidney disease and in older adult patients with poor kidney function who have hypokalemia.
Answer to Question 2
ANS: A
The nurse must take special care to hydrate the patient because nausea, anorexia, and diarrhea all work to dehydrate patients who are undergoing chemotherapy.