Correct Answer: C

Rationale: When caring for a client diagnosed with delirium, the most important condition for the nurse to investigate is prescription drug intoxication. Delirium can be caused by various factors, and prescription drug intoxication is a common reversible cause. Investigating this factor first is crucial to identify and address the underlying cause promptly. Choices A, B, and D are less likely to be directly associated with delirium compared to prescription drug intoxication. While cancer, impaired hearing, and heart failure can have their complications and effects, they are not typically the primary causes of delirium in a client.

Correct Answer: A

Rationale: The correct answer is A: Administer antibiotics and monitor oxygen levels. Antibiotics are essential to treat the infection caused by bacteria in pneumonia, while monitoring oxygen levels helps ensure adequate oxygenation. Administering bronchodilators and encouraging deep breathing, as in choice B, are more commonly associated with managing conditions like asthma or COPD, not pneumonia. Providing fluids and monitoring for dehydration, as in choice C, are important for various conditions but not specific to pneumonia management. Administering oxygen and providing bed rest, as in choice D, may be supportive measures in pneumonia treatment, but the key intervention is administering antibiotics.

Correct Answer: A

Rationale: The correct answer is A. Viral infections typically last longer than bacterial infections. This is because viral infections often require the body's immune system to fight off the virus, leading to a longer duration of illness. Bacterial infections, on the other hand, often cause a rapid onset of symptoms due to the toxins produced by bacteria. Choice B is incorrect because not all bacterial infections cause high fever. Choice C is incorrect because rashes can be caused by both bacterial and viral infections, but not always. Choice D is incorrect because while some viral infections may cause a sudden onset of symptoms, it is not a key distinguishing factor between viral and bacterial infections.

Correct Answer: B

Rationale: Instructing the client to administer insulin before meals is a crucial teaching point for a client with diabetes. This action ensures proper glucose management by helping to control blood sugar levels. Monitoring blood sugar levels once a week (Choice A) may not be frequent enough to manage diabetes effectively. While regular exercise (Choice C) is beneficial for glucose control, the immediate administration of insulin is more critical at the time of discharge. Administering oral hypoglycemics as needed (Choice D) is inappropriate as it does not address the need for insulin administration for a client being discharged.

Correct Answer: B

Rationale: The correct answer is B: 'Increase physical activity to 150 minutes per week.' Increasing physical activity is essential for clients with CAD as it helps reduce the risk of cardiovascular events. Choice A is incorrect as red meat is high in saturated fats, which can be detrimental for CAD. Choice C is incorrect as foods high in fiber, such as fruits, vegetables, and whole grains, are beneficial for heart health. Choice D is incorrect as increasing sodium intake can lead to hypertension and worsen CAD.