which type of cell is responsible for producing antibodies in the immune system
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PN Exit Exam 2023 Quizlet

1. Which type of cell is responsible for producing antibodies in the immune system?

Correct answer: A

Rationale: The correct answer is A: B lymphocytes. B lymphocytes (B cells) are a crucial part of the adaptive immune system. They produce antibodies, which are proteins that specifically target and neutralize pathogens such as bacteria and viruses. T lymphocytes (choice B) are involved in cell-mediated immunity rather than antibody production. Macrophages (choice C) are phagocytic cells that engulf and digest pathogens but do not produce antibodies. Neutrophils (choice D) are a type of white blood cell that primarily function in the innate immune response by phagocytosing pathogens.

2. Which task could the PN safely delegate to the UAP?

Correct answer: A

Rationale: The correct answer is A because oral feeding of a child is a task that can be safely delegated to an unlicensed assistive personnel (UAP). This task involves providing basic care and does not require specialized nursing skills. Choices B, C, and D involve assessments, recording client goals, and evaluating pain, respectively, which all require specialized nursing knowledge, judgment, and skills. These tasks are not within the scope of practice for a UAP.

3. When a small fire breaks out in the kitchen of a long-term care facility, which task is most important for the nurse to perform instead of assigning to a UAP?

Correct answer: C

Rationale: During a fire emergency in a long-term care facility, the most critical task for the nurse is to identify the method for transporting and evacuating each resident. This task requires quick decision-making and critical thinking, which are essential in ensuring the safety and well-being of the residents. Closing the doors to residents' rooms (Choice A) can help contain the fire but should not be the nurse's top priority. While offering comfort and reassurance (Choice B) is important, the immediate focus should be on ensuring safe evacuation. Providing blankets (Choice D) is also important but comes after ensuring safe transportation and evacuation plans are in place.

4. Which of the following is MOST LIKELY to increase the risk of a medication error?

Correct answer: B

Rationale: Errors in the calculation of medication dosages are a significant risk factor for medication errors. When dosage calculations are incorrect, it can lead to administering the wrong amount of medication, posing serious harm to the patient. Avoiding abbreviations for medications, barcoding medication orders, and utilizing unit dose dispensers are all strategies aimed at reducing medication errors by enhancing accuracy and safety. Therefore, choices A, C, and D are incorrect as they are practices that help decrease, rather than increase, the risk of medication errors.

5. Which nursing intervention is most appropriate for managing delirium in an elderly patient?

Correct answer: C

Rationale: Encouraging family presence is the most appropriate intervention for managing delirium in elderly patients. This intervention provides orientation, reassurance, and comfort, which can help reduce confusion and anxiety, thus aiding in managing delirium. Keeping the room brightly lit (Choice A) may worsen delirium as it can disrupt the patient's sleep-wake cycle. Administering sedatives (Choice B) should be avoided unless absolutely necessary due to the risk of worsening delirium. Restricting fluids (Choice D) is not a recommended intervention for managing delirium, as hydration is important for overall patient well-being.

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