ATI RN
Pediatric Immunization Test Questions Questions
Question 1 of 5
Pus formed at the site of infection is largely composed of dead:
Correct Answer: B
Rationale: Neutrophils are the primary cells in pus due to their rapid response and death post-phagocytosis.
Question 2 of 5
Mast cell arachidonic acid metabolites include cyclo-oxygenase, which produces prostaglandins that stimulate and increase of smooth muscle in the gut and bronchi. Metabolites also include leukotrienes, which have a effect than prostaglandins.
Correct Answer: D
Rationale: Prostaglandins cause vasodilation and smooth muscle contraction, while leukotrienes have a faster, more potent effect on inflammation and constriction.
Question 3 of 5
Vaccines (natural exposure) is considered active immunotherapy and leads to the development of immunologic memory.
Correct Answer: A
Rationale: Active immunotherapy via vaccines stimulates the immune system to produce memory cells, conferring long-term immunity.
Question 4 of 5
Pathogens can evade the immune system through antigenic drift, which is a mutation that leaves existing antibodies and antigenic shift, which is a mutation that leaves existing antibodies
Correct Answer: A
Rationale: Antigenic drift involves minor mutations reducing antibody efficacy, while antigenic shift involves major changes rendering antibodies ineffective.
Question 5 of 5
A male patient presents with severe and recurrent bacterial infections. Lab work confirms the patient is only infected with certain bacteria due to a mutation in a gene for NADPH oxidase. Which of the following is the most likely?
Correct Answer: D
Rationale: CGD, caused by NADPH oxidase mutations, leads to severe infections with catalase-positive bacteria.