Correct Answer: A

Rationale: The correct action for the nurse to implement is to observe for unilateral swelling. Unilateral swelling could indicate a deep vein thrombosis (DVT), which is a serious complication that requires immediate assessment. Administering pain medication or applying warm compress may not address the underlying cause of the symptoms. Notifying the healthcare provider should be done after assessing and identifying the issue of unilateral swelling.

Correct Answer: C

Rationale: In a client with hyperglycemic hyperosmolar syndrome (HHS), a serum osmolarity of 320 mOsm/kg is the most concerning laboratory value. This high osmolarity indicates severe dehydration, which can lead to serious complications. Elevated serum glucose levels (choice A) are expected in HHS but do not directly reflect dehydration. Blood pressure (choice B) and serum pH (choice D) are important parameters to monitor but are not the most concerning values in HHS compared to serum osmolarity.

Correct Answer: B

Rationale: When a client with major depressive disorder shows signs of increased energy, giving away belongings, and an elevated mood, it could indicate a shift towards suicidal behavior. Therefore, the best intervention for the nurse is to ask the client if she has had any recent thoughts of harming herself. This is crucial to assess the client's risk for suicide and provide necessary interventions. Choices A, C, and D are incorrect because they do not address the potential risk of harm to the client and do not prioritize the immediate assessment required in this situation.

Correct Answer: C

Rationale: The client's handwashing ritual is a compulsion, a repetitive behavior driven by the need to reduce anxiety associated with an obsession. In this case, the client's need to wash her hands excessively stems from an obsession with cleanliness, leading to the compulsive behavior of extensive handwashing. 'Addiction' (Choice A) involves a dependence on a substance or behavior, not related to this scenario. 'Phobia' (Choice B) is an intense fear of a specific object or situation, not applicable here. 'Obsession' (Choice D) refers to persistent and intrusive thoughts, while the handwashing behavior in this case is the compulsive action taken to alleviate the anxiety related to the obsession.

Correct Answer: D

Rationale: The correct answer is D. A post-lumbar puncture headache, ranging from mild to severe, may occur as a result of leakage of cerebrospinal fluid at the puncture site. This complication is usually managed by bed rest, analgesics, and hydration. Choices A, B, and C do not directly indicate complications associated with a lumbar puncture. Pain in the lower back when moving legs, a sore throat when swallowing, and nausea with a feeling of vomiting are not typical complications of lumbar puncture.