Correct Answer: C

Rationale: The correct action the nurse should plan to take when administering Propranolol is to assist the client when sitting up or standing after taking the medication. Propranolol can lead to orthostatic hypotension, causing dizziness upon sudden position changes. It is essential to help the client with position changes to prevent falls or injury.

Correct Answer: A

Rationale: Hydralazine is a vasodilator that can cause reflex tachycardia as an adverse effect. The client should monitor their pulse and report any significant increases.

Correct Answer: B

Rationale: Metoclopramide, as a dopamine antagonist, is prescribed to treat nausea and increase gastric motility in clients with diabetic gastroparesis. By enhancing gastric emptying, it can alleviate symptoms such as bloating and nausea associated with gastroparesis.

Correct Answer: C

Rationale: The correct answer is bone marrow suppression. Methotrexate can lead to bone marrow suppression, resulting in anemia, leukopenia, and thrombocytopenia. Monitoring for signs of decreased blood cell counts is crucial to prevent complications.

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 who develop tachycardia, such as in the case of reflex tachycardia induced by Isosorbide Mononitrate, making it the appropriate choice in this scenario.