A nurse is contributing to the plan of care for a client who has a potassium level of 2.9 mEq/L. Which of the following actions should the nurse plan?

A. Give a dose of alendronate is incorrect. Alendronate is a medication used to treat osteoporosis, and it does not address low potassium levels. In this case, the focus should be on correcting the potassium imbalance. B. Administer furosemide is incorrect. Furosemide is a diuretic that can cause further loss of potassium. In a client with low potassium levels (hypokalemia., administering furosemide could worsen the condition and lead to life-threatening complications. C. Apply a cardiac monitor is correct. Hypokalemia (potassium level of 2.9 mEq/L) can cause significant cardiac arrhythmias, including ventricular tachycardia or fibrillation. Applying a cardiac monitor is essential for monitoring the client’s heart rhythm and detecting any abnormalities related to the low potassium level. D. Monitor for Chvostek's sign is incorrect. Chvostek's sign is indicative of hypocalcemia, not hypokalemia. While both hypocalcemia and hypokalemia can cause neuromuscular excitability, monitoring for Chvostek’s sign is not a priority in the management of hypokalemia.