Question

a client prescribed furosemide for the past six months is scheduled to receive digoxin for heart failure. which laboratory serum levels should the nurse review before administering the digoxin?

a magnesium
b furosemide
c calcium
d potassium

Explanation:

Furosemide is a diuretic that can cause potassium loss (hypokalemia). Digoxin toxicity risk increases with hypokalemia. So, reviewing potassium levels is crucial before digoxin administration. Magnesium, furosemide (not a serum level for this purpose), and calcium are less relevant here compared to potassium in this drug - interaction context.

Answer:

D. Potassium