ATI RN
Pediatric Immunization Practice Questions Questions
Question 1 of 5
Which of the following is not associated with neutropenia?
Correct Answer: A
Rationale: Leukocyte adhesion deficiency (LAD) causes leukocytosis, not neutropenia, due to impaired neutrophil migration, unlike the other conditions.
Question 2 of 5
An 18-month-old male child presented with failure to thrive and chronic diarrhea. On examination he has dermatitis, generalized lymphadenopathy, hepatosplenomegaly, and deep seated infection in the inguinal area. His lab. investigations revealed anemia and hypergammaglobulinemia. Of the following, the MOST likely diagnosis is
Correct Answer: D
Rationale: Chronic granulomatous disease causes failure to thrive, deep infections, and hypergammaglobulinemia due to defective phagocyte killing.
Question 3 of 5
Which of the following regulators inhibits C3convertase
Correct Answer: D
Rationale: CD46 (membrane cofactor protein) inhibits C3 convertase by promoting its degradation, regulating the complement system to prevent excessive activation.
Question 4 of 5
Wrong about antigen interaction with lymphocytes
Correct Answer: C
Rationale: T cells recognize antigens only when presented on MHC molecules by antigen-presenting cells, not as soluble antigens directly.
Question 5 of 5
Which of the following clear Viral infected cells that doesn't exhibit MHC-1
Correct Answer: C
Rationale: NK cells target cells lacking MHC class I, a mechanism viruses use to evade CD8 T cells.