Correct Answer: B

Rationale: The correct answer is to increase fluid intake to 2 liters per day. Adequate fluid intake helps manage hypertension and prevent fluid retention. Limiting sodium intake, avoiding potassium-rich foods, and abstaining from alcohol are important aspects of managing hypertension; however, in this scenario, emphasizing the increase in fluid intake is crucial for the client's understanding and compliance.

Correct Answer: B

Rationale: The correct answer is to 'Wear shoes at all times.' This instruction is crucial for preventing foot injuries in clients with diabetes mellitus. Wearing shoes protects the feet from potential injuries and reduces the risk of developing foot ulcers. Cutting toenails straight across (not in a rounded shape) helps prevent ingrown toenails. Applying lotion between the toes can create a moist environment, increasing the risk of fungal infections. Soaking feet in hot water daily can lead to dry skin and potentially cause burns, which is not recommended for individuals with diabetes.

Correct Answer: B

Rationale: The correct answer is B: Bowel inflammation. Bowel inflammation can decrease the absorption of medications, reducing their effectiveness. Improved mobility (choice A) would generally not contribute to a decrease in medication effectiveness. Long-term use of the medication (choice C) may lead to tolerance but would not directly cause a decrease in effectiveness. Frequent dehydration (choice D) can affect overall health but is not a direct factor in the medication's effectiveness for arthritis.

Correct Answer: B

Rationale: Verifying tube placement is the crucial initial step a nurse should take before administering enteral feedings through an NG tube. This step ensures that the tube is correctly positioned in the stomach, reducing the risk of complications such as aspiration. Measuring residual gastric volume, flushing the tube with water, or administering the feeding in small boluses are all important steps in enteral feeding but should only be done after confirming the correct tube placement.

Correct Answer: A

Rationale: Corrected Rationale: The nurse should instruct the client to use pursed-lip breathing during activities to help improve oxygenation. Pursed-lip breathing can keep the airways open longer, facilitating better oxygen exchange and making it easier to exhale carbon dioxide. Choice B is incorrect as physical activity, within the client's limitations, is beneficial for maintaining overall health. Choice C is incorrect as weight-bearing exercises are important for bone health but not directly related to improving oxygenation in COPD. Choice D is incorrect as using a humidifier while sleeping can help with moisture in the airways but does not directly impact oxygenation in COPD.