Correct Answer: B

Rationale: Pursed-lip breathing is a beneficial technique for clients with COPD as it helps control shortness of breath and improves oxygenation. This technique involves inhaling slowly through the nose and exhaling through pursed lips, which helps keep airways open. Option A is incorrect as breathing rapidly through the mouth when using the incentive spirometer can lead to hyperventilation. Option C is incorrect because it is important for clients with COPD to stay hydrated by drinking fluids between meals, but not during meals which can cause bloating and discomfort. Option D is incorrect as diaphragmatic breathing, though beneficial, is not the preferred technique for managing dyspnea in COPD; pursed-lip breathing is more effective.

Correct Answer: C

Rationale: Elevated random serum glucose levels of 190 mg/dL indicate hyperglycemia and poor blood sugar control, requiring a revised plan of care. HbA1c levels above 7% also indicate long-term poor control of blood sugar. Serum sodium of 144 mEq/L and creatinine of 1.2 mg/dL are within normal ranges and do not directly indicate a need for a plan of care revision.

Correct Answer: A

Rationale: The correct action the nurse should take first when a client reports nausea in the PACU is to turn the client on their side. This action helps prevent aspiration in a client with nausea, reducing the risk of choking or inhaling vomitus. Administering an analgesic (Choice B) is not the priority in this situation unless pain is the primary cause of nausea. While administering an antiemetic (Choice C) can help relieve nausea, it is not the initial action to prevent aspiration. Monitoring the client's vital signs (Choice D) is important but should come after ensuring the client's safety by turning them on their side.

Correct Answer: D

Rationale: The correct answer is 'D: What helps you ignore what you are hearing?' Asking the client about coping mechanisms is essential in assisting them to manage auditory hallucinations. Choice A is incorrect as questioning the reality of the voices may not be helpful. Choice B delves into the cause of the hallucinations rather than coping strategies. Choice C focuses on isolation rather than addressing the client's coping mechanisms.

Correct Answer: D

Rationale: The correct answer is D because enoxaparin should be injected into the abdomen to ensure proper absorption. Choice A is incorrect as enoxaparin should not be taken with food. Choice B is incorrect as enoxaparin should be injected subcutaneously, not into the muscle. Choice C is incorrect as massaging the injection site after administering enoxaparin is not recommended.