The nurse is caring for a patient who takes furosemide (Lasix) daily to treat congestive heart failure. The nurse will watch for which electrolyte imbalance that may occur as a result of this therapy?
a. Hypocalcemia
b. Hypernatremia
c. Hypokalemia
d. Hyperphosphatemia
ANS: C
Furosemide (Lasix) is a loop diuretic that causes loss of potassium through the urine. Patients taking Lasix are at risk for hypokalemia, so the nurse should check the patient's electrolyte values closely, particularly the serum potassium level.
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