The nurse is preparing to administer alendronate to a client with osteoporosis. Which laboratory value indicates that the nurse should withhold the medication and contact the healthcare provider? Reference Range: Total Calcium (9 to 10.5 mg/dL (2.3 to 2.6 mmol/L)] Sodium [136 to 145 mEq/L (136 to 145 mmol/L)] Potassium [3.5 to 5 mEq/L (3.5 to 5 mmol/L)] Magnesium [1.3 to 2.1 mEq/L (0.65 to 1.05 mmol/L)]

A. Calcium 13.0 mg/dL (3.3 mmol/L): Alendronate is used to inhibit bone resorption and is typically prescribed when calcium levels are normal. A high calcium level suggests hypercalcemia, which could worsen if alendronate is given. Therefore, the medication should be withheld, and the healthcare provider must be notified for further evaluation. B. Magnesium 2.4 mEq/L (2.4 mmol/L): This magnesium level is slightly elevated but is not critically abnormal. Magnesium levels are not a primary consideration when deciding whether to administer alendronate, and this finding alone would not necessitate withholding the medication. C. Potassium 5.2 mEq/L (5.2 mmol/L): Mild hyperkalemia is noted here, but potassium levels do not directly impact the safety or effectiveness of alendronate. The nurse should monitor it but does not need to withhold alendronate based on this finding. D. Sodium 132 mEq/L (132 mmol/L): This value indicates mild hyponatremia, but sodium abnormalities are not a direct contraindication to alendronate therapy. The medication could still be administered while addressing the sodium imbalance separately.