Correct Answer: B

Rationale: Reducing salt intake is crucial for managing hypertension. Excessive salt consumption can lead to fluid retention, increasing blood pressure. While stress management, regular physical activity, and weight loss are beneficial for overall health, reducing salt intake is the most important lifestyle modification for controlling hypertension. Stress management may help reduce overall stress levels but does not directly impact blood pressure as salt intake does. Regular physical activity and weight loss can also benefit blood pressure control, but the immediate impact of reducing salt intake is more significant.

Correct Answer: B

Rationale: The best activity for the nurse to assign to the unlicensed assistive personnel (UAP) in this situation is to provide perianal care and collect clean linens for the dressing change. This task is crucial to maintain proper hygiene, prevent infection, and promote healing in the areas affected by decubiti. Choice A is not the priority as addressing the contamination and ensuring hygiene is more critical. Choice C is not the immediate concern and does not address the current situation. Choice D involves direct client care tasks that should be handled by licensed nursing staff.

Correct Answer: C

Rationale: The most important instruction the nurse should provide to a client with COPD prescribed oxygen therapy is not to adjust the oxygen flow rate without consulting a healthcare provider. This is crucial because too much oxygen can suppress the client's respiratory drive, leading to further complications. Choice A is incorrect because increasing the oxygen flow rate without medical advice can be harmful. Choice B is incorrect as oxygen therapy should be used as prescribed, not just when symptoms occur. Choice D is incorrect as the priority is to ensure the correct oxygen flow rate rather than using a humidifier.

Correct Answer: A

Rationale: Administering morphine is a priority intervention during the acute phase of myocardial infarction (MI). Morphine not only provides pain relief but also reduces myocardial oxygen demand, which is crucial in this situation. Choice B is incorrect because isometric exercises can increase myocardial oxygen demand and are not recommended during the acute phase of MI. Choice C is incorrect as elevating the head of the bed, not keeping the client flat, is preferred to reduce workload on the heart. Choice D is incorrect because fluid intake should be encouraged unless contraindicated, as adequate hydration is essential for cardiac function.

Correct Answer: C

Rationale: To prevent leakage of stool under the disposable ostomy bag, the nurse should cut the bag opening to the measurement of the stoma size. This action ensures a proper fit, which is crucial in preventing leaks that can lead to skin irritation and compromise stoma care. Placing a 4x4 wick in the stoma opening or applying zinc oxide ointment may not address the issue of leakage effectively. Administering a PRN antidiarrheal agent is not directly related to preventing leakage caused by an ill-fitting ostomy bag.