The nurse is caring for a patient who is prescribed furosemide (Lasix). Which laboratory result should the nurse review first?
a. Urine sodium
b. Serum sodium
c. Urine potassium
d. Serum potassium
ANS: D
Furosemide (Lasix) is a potassium-wasting diuretic. It is essential to monitor and review potassium levels before administering the Lasix, and if the level is too low, it should be held and the RN or physician notified. A. B. It is not necessary to review urine or serum sodium levels. C. A urine potassium level might not be available.
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