Correct Answer: B

Rationale: The correct action for the nurse to take first when a client with Alzheimer's disease is becoming increasingly confused is to monitor the client's vital signs (Choice B). Increased confusion in Alzheimer's disease patients may indicate underlying issues like infection, dehydration, or medication side effects. Monitoring vital signs is crucial in identifying any potential causes of the confusion. Choices A, C, and D are not the priority in this situation. Reorienting the client to time and place (Choice A) can be helpful but is not the first priority. Providing calming activities (Choice C) and consulting with the healthcare provider about medication adjustments (Choice D) may be necessary but should come after assessing the client's vital signs to rule out immediate physical causes of confusion.

Correct Answer: A

Rationale: The nurse's signature on a surgical consent form signifies that the client voluntarily grants permission for the procedure to be done. This is the correct answer because the nurse's signature does not imply the client's competence, understanding of risks and benefits, or that the client signed the form freely and voluntarily. The nurse's role is to verify that the client has made an informed decision and is providing consent for the procedure.

Correct Answer: B

Rationale: The correct teaching for a client with lupus erythematosus prescribed prednisone is to avoid crowded places to reduce the risk of infection. Prednisone suppresses the immune system, making individuals more susceptible to infections. Taking the medication with food may help reduce stomach upset but is not the priority teaching. Taking prednisone in the morning may help reduce insomnia, but infection prevention is more critical. While prednisone can lead to osteoporosis, advising extra calcium supplements is not the most immediate concern when starting the medication.

Correct Answer: B

Rationale: The correct answer is B: Assist the client with early ambulation. Early ambulation is a key intervention to prevent complications like deep vein thrombosis (DVT) and promote circulation after hip replacement surgery. It also helps with overall recovery and reduces the risk of complications related to immobility, such as muscle atrophy and pressure ulcers. Choice A is incorrect as bed rest should be avoided to prevent complications associated with immobility. Choice C, continuous passive motion therapy, is not the priority intervention immediately post-hip replacement surgery. Choice D, administering pain medication before activity, is important but not the priority intervention to prevent complications in this case.

Correct Answer: B

Rationale: Corrected Rationale: Prolonged exposure to high oxygen concentrations can disrupt the production of surfactant in the lungs, leading to atelectasis and other lung complications. Surfactant is essential for maintaining lung compliance and preventing alveolar collapse. Reduced cardiac output (Choice A) is not directly associated with prolonged oxygen exposure. Hyperactivity of alveoli (Choice C) is not a recognized consequence of high oxygen levels. Increased oxygen carrying capacity (Choice D) is not a pathophysiological effect of prolonged high oxygen exposure.