What is a potential cause of a potassium level reading of 2.4 mg/dL in a client receiving which medication?

A potassium level reading of 2.4 mg/dL indicates severe hypokalemia, which can be a critical condition requiring immediate intervention. One of the primary reasons for this low potassium level is the use of loop diuretics, such as furosemide (Lasix). Furosemide works by inhibiting the reabsorption of sodium and chloride in the loop of Henle, which leads to increased urine production. This increased diuresis can also result in the loss of potassium, as diuretics do not selectively excrete just sodium and water; they can lead to the depletion of other electrolytes, including potassium.

Patients receiving furosemide may require monitoring of their electrolyte levels, particularly potassium, and may need potassium supplementation to prevent hypokalemia. This association is well-documented in clinical settings, reflecting the importance of careful management when administering medications that affect fluid balance and electrolyte levels.