The nurse is instructing a patient on the importance of eating foods rich in potassium while taking a diuretic that causes hypokalemia. Which diuretics do not require potassium supplements?
1. Furosemide (Lasix)
2. Chlorothiazide (Diuril)
3. Amiloride (Midamor)
4. Mannitol (Osmitrol)
5. Spironolactone (Aldactone)
Correct Answer: 3,5
Rationale 1: Furosemide (Lasix) is a loop diuretic that often causes hypokalemia. Patients taking furosemide are encouraged to eat foods high in potassium or take a potassium supplement.
Rationale 2: Chlorothiazide (Diuril) is a thiazide diuretic that often causes hypokalemia. Patients taking chlorothiazide are encouraged to eat foods high in potassium or take a potassium supplement.
Rationale 3: Amiloride (Midamor) is a potassium-sparing diuretic; therefore, patients do not need to eat foods high in potassium or take a potassium supplement while on this medication.
Rationale 4: Mannitol (Osmitrol) is an osmotic diuretic that causes hypokalemia. A patient should be instructed to take a potassium supplement.
Rationale 5: Spironolactone (Aldactone) is a potassium-sparing diuretic. Patients on this medication are not required to eat foods high in potassium or take a potassium supplement.
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