A patient with heart failure asks the nurse why two diuretic drugs, furosemide (Lasix) and spironolactone (Aldactone), have been prescribed. What is the nurse's best response?
a. "Your prescriber wants you to lose fluids and that's why you are taking two di-uretics."
b. "Each of these diuretics works in a different way to decrease workload on your heart."
c. "Using two diuretics will double the amount of fluid you lose to decrease the work your heart must do."
d. "Let me contact your prescriber because patients usually do not take two diuretics at the same time."
B
Spironolactone, when used in low doses, blocks the action of aldosterone, which causes the body to lose salt and water. Furosemide works in the loop of Henle to decrease reabsorption of salt and water. Spironolactone is usually prescribed with another diuretic to decrease the volume of fluid in the blood vessels, which reduces the workload of the heart. Additionally when used together, these drugs help the body maintain a more normal blood potassium level.
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