The nurse is preparing to administer medications to the following clients. Which client should the nurse question administering the medication? 1. Lactulose (Cephulac), a laxative, to a client who has...

The nurse is preparing to administer medications to the following clients. Which client should the nurse question administering the medication?

1. Lactulose (Cephulac), a laxative, to a client who has an ammonia level of 50 g/dL. 2. Furosemide (Lasix), a loop diuretic, to a client who has a potassium level of 3.7 mEq/L. 3. Spironolactone (Aldactone), a potassium-sparing diuretic, to a client with a potassium level of 5.9 mEq/L. 4. Vasopressin (Pitressin) to a client with a serum sodium level of 137 mEq/L.