Correct Answer: D

Rationale: In managing COPD with a metered-dose inhaler (MDI), the nurse should emphasize all of the techniques mentioned. Using a spacer can help improve drug delivery and reduce the risk of oral thrush. Synchronizing breaths with inhaler activation ensures proper medication delivery to the lungs. Regular cleaning of the inhaler prevents blockages and ensures optimal functioning. Therefore, all these techniques are important for effective COPD management, making 'All of the above' the correct answer. Choices A, B, and C are all crucial components of proper MDI technique in COPD, so they are not individually sufficient without the others.

Correct Answer: D

Rationale: The correct answer is 'Wear long sleeves and pants.' This instruction is crucial in reducing the risk of Lyme disease because it helps minimize exposure to ticks that carry the disease. Ticks are commonly found in grassy and wooded areas, so covering up with long sleeves and pants can act as a physical barrier and prevent ticks from attaching to the skin. Choices A, B, and C are not directly related to preventing Lyme disease. Washing hands frequently is important for general hygiene but not specifically for preventing tick bites. Avoiding drinking lake water is more about preventing waterborne illnesses rather than Lyme disease. Not sharing personal products is important for preventing the spread of infections but is not directly related to Lyme disease prevention.

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 correct answer is B. Warmth and redness at the IV site without swelling indicate a localized reaction, which is common and does not necessarily indicate infiltration of IV fluids into the subcutaneous tissues. The absence of swelling suggests that the IV is correctly placed. Therefore, the nurse should conclude that the infusion pump is functioning properly. Choice A is incorrect as warmth and redness alone do not indicate subcutaneous infiltration. Choice C is incorrect as discontinuing the IV solely based on warmth and redness without swelling is not necessary. Choice D is incorrect as the absence of swelling signifies a localized reaction rather than inflammation requiring immediate reporting.

Correct Answer: D

Rationale: In managing GERD, dietary modifications play a significant role. Avoiding spicy and fatty foods helps reduce irritation, while eating small, frequent meals prevents overeating, which can trigger reflux. Avoiding meals before bedtime allows for better digestion and reduces the likelihood of acid reflux during the night. Therefore, all of the options (A, B, and C) are crucial in managing GERD symptoms, making choice D the correct answer.