Which laboratory value requires immediate action for a patient receiving fludrocortisone acetate?

Fludrocortisone acetate is a synthetic corticosteroid that has significant mineralocorticoid activity, which means it plays a crucial role in regulating sodium and potassium levels in the body. When a patient is receiving fludrocortisone, monitoring electrolytes is particularly important because the medication can lead to sodium retention and potassium loss.

In this scenario, a sodium level of 150 mEq/L indicates hypernatremia, which is an elevated concentration of sodium in the blood. High levels of sodium can result in serious complications, including increased blood pressure, fluid retention, and even neurological symptoms due to osmotic shifts. Therefore, hypernatremia necessitates immediate action to prevent potential adverse effects on the patient’s health.

The other laboratory values provided do not typically require immediate intervention. A potassium level of 4.5 mEq/L is within the normal range, hemoglobin at 14 g/dL is generally stable and not alarming, and creatinine at 1.1 mg/dL indicates normal kidney function.