ATI RN
Pediatric Immunization NCLEX Questions Questions
Question 1 of 5
Which of the following peripheral immune tissues is likely to be different from teen through life to old age?
Correct Answer: C
Rationale: The thymus involutes with age, reducing T cell output.
Question 2 of 5
Which of the following statements is TRUE regarding diurnal variation of the absolute eosinophil count (AEC)?
Correct Answer: D
Rationale: Eosinophil counts are lowest in the early morning due to circadian rhythms influenced by cortisol levels, peaking later in the day.
Question 3 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 4 of 5
The diagnosis of chronic granulomatous disease CGD is MOST often made by
Correct Answer: D
Rationale: The nitroblue tetrazolium (NBT) test assesses neutrophil oxidative burst, which is defective in CGD, making it a primary diagnostic tool.
Question 5 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.