Correct Answer: A

Rationale: The correct answer is A: Quitting smoking. Smoking is the most important lifestyle change for a patient with COPD as it is the primary cause of the disease and continues to worsen symptoms. Quitting smoking can slow down the progression of COPD, decrease exacerbations, and improve overall lung function. Summary of other choices: B: Increasing fluid intake - While staying hydrated is important for overall health, it is not the top priority for a patient with COPD. C: Increasing physical activity - Exercise is beneficial for COPD patients, but quitting smoking takes precedence as it directly impacts the disease progression. D: Taking over-the-counter cold medications - Cold medications may provide temporary relief for symptoms, but they do not address the underlying cause of COPD which is smoking.

Correct Answer: C

Rationale: The correct answer is C: Decreasing intake of trans fats. Trans fats are known to increase LDL cholesterol levels, which are considered "bad" cholesterol. By reducing trans fats in the diet, the patient can lower their cholesterol levels. Saturated fats (choice A) can also increase LDL cholesterol, so increasing intake is not beneficial. Dietary fiber (choice B) helps lower cholesterol by binding to cholesterol in the digestive system, so decreasing intake would not be beneficial. Processed sugars (choice D) do not directly impact cholesterol levels, so increasing intake would not help lower cholesterol. Overall, choosing option C is the most effective dietary change for managing high cholesterol.

Correct Answer: C

Rationale: The correct answer is C because stopping insulin when blood glucose is normal is incorrect. Insulin is necessary for managing diabetes even when blood glucose levels are normal to prevent fluctuations. Monitoring blood glucose (A), exercising (B), and eating a balanced diet (D) are all important components of diabetes management. Stopping insulin abruptly can lead to hyperglycemia and potential complications.

Correct Answer: D

Rationale: The correct answer is D because asking the patient's family to bring in the medications will ensure accurate identification and understanding of the medications. This step is crucial in ensuring the patient's safety and well-being. Choice A is incorrect as appearance alone may not provide accurate information. Choice B is dismissive and does not address the issue. Choice C focuses on duration rather than addressing the immediate concern of medication identification.

Correct Answer: C

Rationale: The correct answer is C because monitoring the patient for signs of infection and deep vein thrombosis is crucial in preventing complications post-hip replacement surgery. Infections can lead to serious complications, while deep vein thrombosis can result in blood clots that can be life-threatening. By closely monitoring for these signs, the nurse can intervene early and prevent further complications. Choice A is incorrect because complete avoidance of physical activity can lead to other complications such as muscle atrophy and delayed recovery. Choice B is incorrect because pain management should be proactive to prevent unnecessary suffering. Choice D, while important, is not directly related to preventing complications such as infection and deep vein thrombosis.