A client with hyperparathyroidism is prescribed furosemide (Lasix). Which dietary instruction is appropriate?

• A. Increase dietary intake of calcium.
• B. Drink at least 2 to 3 L of fluid daily.
• C. Eat sparingly when experiencing nausea.
• D. Decrease dietary intake of potassium.

Answer: (B)

Loop diuretics like furosemide increase urine output, which can lead to dehydration and electrolyte imbalances. Maintaining good hydration helps prevent volume depletion and supports kidney function as the drug promotes calcium excretion to lower calcium levels. Drinking 2–3 liters of fluid daily is an appropriate, practical instruction in this context. Increasing calcium intake would worsen hypercalcemia, which isn’t desired, while diet changes about nausea or potassium are not the primary focus here; in fact, loop diuretics commonly cause potassium loss, so decreasing potassium isn’t advised.