Correct Answer: C

Rationale: The correct answer is C: 'NPO reduces the risk of aspiration during surgery.' When a client is NPO (nothing by mouth) before surgery, it is to prevent aspiration, which can lead to serious complications such as pneumonia. Choice A is incorrect because being NPO is more about preventing aspiration than nausea. Choice B is a general statement without specifying the reason for being NPO. Choice D is partially correct but does not emphasize the crucial aspect of preventing aspiration, which is the primary reason for fasting before surgery.

Correct Answer: A

Rationale: In this scenario, the priority action for the nurse is to administer oxygen and elevate the head of the bed. These interventions help relieve dyspnea and chest pain, which can be indicative of a pulmonary embolism or other complications during heparin therapy. Administering nitroglycerin (Choice B) is not the initial priority in this situation as the client's symptoms are not suggestive of angina. Assessing for bleeding (Choice C) is important but not the first action needed to address chest pain and dyspnea. Administering albuterol (Choice D) is not indicated unless there are specific respiratory issues requiring it, which are not described in the scenario.

Correct Answer: B

Rationale: The best response for a client with schizophrenia experiencing auditory hallucinations is to acknowledge the client's feelings and ask what the voices are saying. This approach helps build rapport with the client, demonstrates empathy, and allows the nurse to assess the content of the hallucinations. Understanding the content is crucial to determine whether the client is at risk of harm. Encouraging the client to ignore the voices (Choice A) may invalidate their experience. Redirecting the conversation (Choice C) may not address the underlying issue of the hallucinations. Offering reassurance (Choice D) without understanding the content may overlook potential risks.

Correct Answer: C

Rationale: The correct answer is C. Using cold packs to relieve joint pain is appropriate for clients with rheumatoid arthritis as cold therapy is more effective at reducing inflammation and pain in these conditions. Heat applications may exacerbate the symptoms by increasing swelling. Taking warm showers before activity may provide comfort but does not directly address joint pain or prevent injury. While anti-inflammatory medications are commonly prescribed, they are not directly related to preventing injury in clients with rheumatoid arthritis.

Correct Answer: D

Rationale: In a client with chronic liver disease developing jaundice, the most important assessment the nurse should perform is to monitor the client's urine output closely. Jaundice can indicate worsening liver function, so monitoring urine output helps assess kidney function and fluid balance, which are critical in chronic liver disease. Assessing the client's skin for lesions or sores (Choice A) may be relevant for dermatological conditions but is not the priority in this case. Monitoring liver function tests (Choice B) is important but may not provide immediate information on the client's current status. Assessing for changes in mental status and behavior (Choice C) is important for detecting hepatic encephalopathy but does not directly address the immediate concern of fluid balance and kidney function in the presence of jaundice.