Correct Answer: B

Rationale: Spironolactone is classified as a potassium-sparing diuretic. It works by antagonizing the aldosterone receptor, leading to potassium retention and sodium excretion, making it a suitable choice for conditions where potassium retention is desired, such as in patients with heart failure or liver cirrhosis.

Correct Answer: A

Rationale: The correct instruction for a client prescribed Rifampin is to expect orange discoloration of urine. Rifampin is known to cause harmless discoloration of bodily fluids, including urine, which is a common side effect of this medication. It is important for the nurse to educate the client about this expected side effect to prevent unnecessary concern or discontinuation of the medication.

Correct Answer: C

Rationale: When a patient is being treated with Lithium, a life-threatening side effect to watch out for is seizures. Seizures are serious and necessitate prompt medical intervention to ensure the patient's safety and well-being.

Correct Answer: A

Rationale: The correct instruction for taking Pancrelipase is to take it with meals and snacks to aid in the digestion of fats, proteins, and carbohydrates. This helps optimize the effectiveness of the medication in managing chronic pancreatitis.

Correct Answer: C

Rationale: Loop diuretics, like Furosemide, can increase the risk of Digoxin toxicity by causing hypokalemia. Hypokalemia enhances the toxic effects of Digoxin on the heart, leading to an increased risk of Digoxin toxicity.