A nurse is reinforcing discharge teaching with a client who has pulmonary edema and is about to start taking furosemide. Which of the following instructions should the nurse include?

A. Eat foods that contain plenty of potassium: Furosemide is a loop diuretic that can cause potassium loss through increased urine output. Encouraging the intake of potassium-rich foods, such as bananas, oranges, and leafy greens, helps prevent hypokalemia and related complications like muscle weakness and arrhythmias. B. Take aspirin for headaches: Aspirin does not have a direct role in managing side effects of furosemide. Clients should be cautious with medications that can affect kidney function or increase bleeding risk while on diuretics, so aspirin use should be discussed with the healthcare provider. C. Expect some swelling in the hands and feet: Furosemide is prescribed to reduce fluid overload, so persistent swelling should not be expected if the medication is effective. Swelling may indicate inadequate response or worsening fluid retention. D. Take the medication at bedtime: Taking furosemide at night can cause nocturia and disrupt sleep. It is usually recommended to take the medication in the morning to allow diuresis during the day and reduce nighttime interruptions.