Final answer:
The nurse would include in the care plan to monitor a client receiving sublingual nitroglycerin for an adverse effect of decreased blood pressure. Nitroglycerin can lead to a drop in blood pressure, so diligent monitoring is important to avoid potential shock or other serious complications.
Step-by-step explanation:
When monitoring a client who is receiving sublingual nitroglycerin for chest pain, it is important to observe for the adverse effect of decreased blood pressure. Nitroglycerin works by dilating the blood vessels, which can lead to a drop in blood pressure, a condition called hypotension.
While nausea, vomiting, and diarrhea are also potential adverse effects, they are less directly related to the action of nitroglycerin on the cardiovascular system compared to changes in blood pressure. It is crucial for the nurse to monitor the client's blood pressure after administering the medication to ensure it doesn't drop to dangerously low levels, which could lead to shock or other complications.