Correct Answer: D

Rationale: The correct immediate action for the nurse is to notify the anesthesia provider immediately (Option D). This is crucial because a sudden change in the patient's level of consciousness during surgery could indicate a serious issue related to anesthesia administration. Notifying the anesthesia provider promptly allows for quick assessment and intervention to address the underlying cause, potentially preventing complications or even saving the patient's life. Administering a reversal agent (Option A) without proper evaluation by the anesthesia provider could be dangerous. Documenting the change in the patient's chart (Option B) is important but not the most immediate action. Checking the patient's vital signs (Option C) is also important but may not provide immediate insight into the cause of the change in consciousness.

Correct Answer: A

Rationale: The correct answer is A: Active artificial immunity. This is because the person's immune system is actively stimulated by the vaccine to produce antibodies against Covid-19. It is considered artificial because it is acquired through vaccination rather than natural exposure to the disease. B: Active natural immunity is incorrect because it refers to immunity acquired through natural exposure to the disease. C: Passive natural immunity is incorrect because it refers to temporary immunity passed from mother to baby through breast milk or placenta. D: Passive artificial immunity is incorrect because it refers to receiving pre-formed antibodies, such as through an injection of antibodies rather than the body producing them itself.

Correct Answer: C

Rationale: The correct answer is C: Systematic sampling. Nurse Sandy is adopting systematic sampling by selecting every third patient with MI after a random start. This method ensures equal chance of selection for each patient and maintains randomness. In contrast, simple random sampling (A) entails each patient having an equal chance of being selected independently. Stratified sampling (B) divides patients into groups based on certain characteristics, which is not the case here. Cluster sampling (D) involves grouping patients and selecting entire groups, which is different from the individual selection in this scenario.

Correct Answer: C

Rationale: The correct answer is C: Secures clean ties before removing soiled ones. This is the priority action because securing clean ties prevents accidental dislodgement of the tracheostomy tube, ensuring the patient's airway remains patent. Cutting the dressing (A) or cleaning the incisions (B) can be important but not as critical as securing the tube. Using clean technique (D) is essential but not the priority in this situation.

Correct Answer: B

Rationale: The correct answer is B: Equity in services. Collaboration and teamwork in public health are crucial to ensure equal access to services for all populations, regardless of their background or socioeconomic status. By working together, public health professionals can identify disparities and implement strategies to address them, ultimately leading to improved equity in healthcare services. A: Staff performance - While collaboration and teamwork can positively impact staff performance, the primary focus in public health is on achieving equity in services for all individuals. C: Proper use of resources - Collaboration can help optimize resource allocation, but the main goal in public health is to ensure equitable access to services. D: Quality healthcare - While collaboration can enhance the quality of healthcare, the primary emphasis in public health is on promoting equity in services to address health disparities.