Correct Answer: B

Rationale: Furosemide is a diuretic that commonly causes hyponatremia (low sodium levels) due to its effect on sodium and water excretion. The nurse must closely monitor the client for signs of hyponatremia, such as weakness, confusion, and muscle cramps, and promptly intervene to prevent complications.

Correct Answer: B

Rationale: Pamidronate is given through IV infusion and can be irritating to veins. Therefore, the nurse should frequently assess the IV site for thrombophlebitis during the administration to promptly detect any potential complications related to the infusion.

Correct Answer: D

Rationale: When taking colesevelam, it should be administered with food and at least 8 oz of water to ensure proper absorption and reduce the risk of gastrointestinal side effects. Therefore, the nurse should instruct the client to take colesevelam with food and at least one glass of water.

Correct Answer: C

Rationale: The nurse should monitor the client for neutropenia when receiving capecitabine, as it is a common adverse effect caused by bone marrow suppression. Neutropenia increases the risk of infection, making it essential for the nurse to closely monitor the client's white blood cell count and assess for signs of infection during treatment.

Correct Answer: B

Rationale: The nurse should instruct the client to report fever when starting rituximab therapy. Fever can be a sign of infection, which is a potential complication associated with rituximab. Early detection and treatment of infections are important to ensure the client's safety and well-being.