ATI RN
Pediatric Immunization Test Questions Questions
Question 1 of 5
A 7-year-old child presented with severe stridor and abdominal pain, he gives history of recurrent episodes of nonpruritic edema lasting 48 to 72 hours, which usually triggered by stress, or anxiety. Of the following, the MOST likely cause is deficiency of
Correct Answer: C
Rationale: C1 inhibitor deficiency causes hereditary angioedema, leading to recurrent nonpruritic edema triggered by stress.
Question 2 of 5
Which of the following provides antiviral state to cells
Correct Answer: D
Rationale: Interferon-gamma (INF-γ) induces an antiviral state by enhancing MHC expression and activating immune cells against viral infections.
Question 3 of 5
True about GVHD
Correct Answer: B
Rationale: GVHD doesn't occur in identical twins due to genetic identity; it's driven by donor T cells, not recipient ones.
Question 4 of 5
Wrong about Macrophages
Correct Answer: B
Rationale: Macrophages present antigens to activate T cells but are less efficient than dendritic cells for naïve T cell activation.
Question 5 of 5
The difference between tolerance and immunity depends upon the maturation status of the antigen presenting dendritic cells. What is the T-cell outcome of an antigen presentation event by a mature dendritic cell?
Correct Answer: C
Rationale: Mature dendritic cells activate T cells by presenting antigens with co-stimulatory signals.