Correct Answer: D

Rationale: The main purpose of the NCLEX examination is to ensure the safety of the public by determining if candidates have the knowledge and skills necessary to provide safe and effective nursing care. Choice A is incorrect as the exam evaluates if individuals are ready to begin nursing practice, not just passed classes. Choice B is incorrect as the exam is not related to the affiliation of nursing schools with service agencies. Choice C is incorrect as the exam is not designed to help potential students choose the best nursing schools, but rather to assess individual readiness for nursing practice to protect public safety.

Correct Answer: C

Rationale: The most effective strategy for reducing medication errors on a nursing unit is using barcoding technology for medication administration. Barcoding technology helps to ensure the right medication is given to the right patient in the right dose at the right time. Increasing the nurse-to-patient ratio (choice A) may help in preventing errors due to workload, but it may not address the root cause of medication errors. Providing ongoing education (choice B) is important but may not be as effective as implementing technology to directly prevent errors during administration. Increasing the use of PRN medications (choice D) can actually increase the risk of errors if not carefully monitored and controlled.

Correct Answer: A

Rationale: The correct answer is A because replacing staff injured while caring for a violent patient is both urgent and important. This issue directly relates to staff safety and patient care, requiring immediate attention. Choice B is not urgent or crucial to patient care. Choice C is important but may not be as urgent as the situation in choice A. Choice D is not as critical as replacing injured staff, making it a less urgent and important issue.

Correct Answer: D

Rationale: In this scenario, the nurse should notify the nursing manager next. The surgeon's instructions are related to the client's condition, and it is crucial to inform the nursing manager about the situation. Option A is incorrect because documenting the surgeon's instructions in the medical record is not the immediate next step. Option B is also incorrect as completing an incident report is not warranted in this situation. Option C is not the best choice as consulting the charge nurse may cause a delay in escalating the situation to higher management, which is necessary in cases of emergency like hemorrhagic shock.

Correct Answer: B

Rationale: The correct answer is B. Vaccination programs are considered a primary prevention strategy in public health because they aim to prevent the occurrence of diseases before they occur. Screening for diabetes (choice A) is more of a secondary prevention strategy that aims to detect and treat the disease early. Emergency response planning (choice C) is more focused on preparedness and response rather than preventing the initial occurrence of health issues. Chronic disease management (choice D) involves treating and controlling diseases that have already developed, making it a tertiary prevention strategy rather than primary.