Correct Answer: B

Rationale: Clopidogrel is an antiplatelet medication that works by inhibiting platelet aggregation. Therefore, the nurse should monitor the client's platelet count to assess for potential bleeding complications. Changes in platelet count can indicate the effectiveness of Clopidogrel therapy and help prevent adverse effects related to clotting or bleeding.

Correct Answer: A

Rationale: The nurse should instruct the client to use a soft-bristled toothbrush to prevent bleeding, which can occur due to chemotherapy-induced thrombocytopenia.

Correct Answer: D

Rationale: Metoprolol, a beta-adrenergic blocker, is commonly used to treat hypertension and stable angina pectoris. It is often prescribed to decrease heart rate in clients experiencing tachycardia, including those with reflex tachycardia induced by medications like Isosorbide Mononitrate.

Correct Answer: A

Rationale: Metformin should be taken with meals to reduce gastrointestinal side effects and ensure better absorption. Instructing the client to take the medication with the first bite of food helps in achieving optimal effectiveness and minimizes the risk of side effects like nausea or upset stomach.

Correct Answer: D

Rationale: Yellow-tinged vision is a potential adverse effect of Digoxin and may indicate toxicity. Clients should be instructed to report this symptom promptly to the healthcare provider to prevent complications.