ATI RN
Pediatric Immunization NCLEX Questions Questions
Question 1 of 5
A 15-year-old boy with rheumatoid arthritis, on quinine for 6 months, presented with fever, aphthous stomatitis, and fatigue for the last 5 days. His absolute neutrophil count (ANC) was 700/μL. The MOST next appropriate therapeutic measure to be done when quinine withdrawal fails to improve neutropenia is
Correct Answer: D
Rationale: G-CSF stimulates neutrophil production, effectively treating drug-induced neutropenia unresponsive to withdrawal.
Question 2 of 5
Which of the following is a messenger that mediates the connection between the innate and adaptive immune systems?
Correct Answer: D
Rationale: Cytokines are signaling molecules that bridge innate and adaptive immunity by facilitating communication, such as activating lymphocytes after innate detection of pathogens.
Question 3 of 5
Which of the following components of the innate immune system involves recognition molecules such as mannan-binding lectin (MBL) for bacteria with mannose on the surface?
Correct Answer: B
Rationale: The complement system uses MBL to recognize mannose on bacterial surfaces, triggering a cascade to eliminate pathogens.
Question 4 of 5
Macrophages
Correct Answer: A
Rationale: Macrophages perform phagocytosis, kill bacteria, and present antigens to T cells, key roles in innate immunity.
Question 5 of 5
Eventual elimination of antigen
Correct Answer: C
Rationale: The effector phase is when activated immune cells eliminate the antigen.