ATI RN
Immune System Quiz Quizlet Questions
Question 1 of 5
What is the significance of HER2 positivity in breast cancer?
Correct Answer: A
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 2 of 5
Priority Decision: On assessment of a central venous access device (CVAD) site, the nurse observes that the transparent dressing is loose along two sides. What should the nurse do immediately?
Correct Answer: D
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 3 of 5
Which of the following immunoglobulins is present normally in plasma at the highest concentration?
Correct Answer: A
Rationale: The correct answer is A: IgG. IgG is the most abundant immunoglobulin in plasma, comprising around 75% of total immunoglobulins. It is produced in response to infections and provides long-term immunity. IgM is the first antibody produced in response to an infection, but its concentration decreases over time. IgA is mainly found in mucosal areas and secretions. IgD is present in small amounts and its function is not fully understood. Thus, IgG is the correct answer due to its high concentration in plasma and important role in long-term immunity.
Question 4 of 5
When a B-cell undergoes immunoglobulin class switching
Correct Answer: C
Rationale: When a B-cell undergoes immunoglobulin class switching, the variable region of the heavy chain remains the same but its constant region changes. This process allows the B-cell to produce antibodies with different effector functions while maintaining the same antigen specificity. By changing the constant region of the heavy chain, the B-cell can switch from producing IgM to IgG, IgA, or IgE antibodies. Choices A, B, and D are incorrect because they do not accurately describe the specific changes that occur during immunoglobulin class switching in B-cells.
Question 5 of 5
The nurse is caring for a patient who just returned from surgical decompression of the carpal tunnel. Which finding requires the nurse's immediate action?
Correct Answer: C
Rationale: The correct answer is C because a capillary refill time of 8 seconds indicates poor perfusion, which could be a sign of compromised blood flow to the fingers post-surgical decompression. This finding requires immediate action to prevent complications such as ischemia or impaired wound healing. A: Swollen and warm fingers are expected after surgery due to inflammation. B: Generalized pain can be managed with appropriate pain relief measures and is not an immediate concern post-surgery. D: Pink and cool fingers indicate adequate perfusion and are normal findings post-surgery.