ATI RN
Ricci Maternity and Pediatrics NCLEX Question Immunization Questions
Question 1 of 5
Severe eosinophilia, defined as an absolute eosinophil count (AEC) more than
Correct Answer: C
Rationale: Severe eosinophilia is clinically defined as an AEC >1,500 cells/μL, indicating significant eosinophil elevation.
Question 2 of 5
The MOST common pathogen in chronic granulomatous disease (CGD) is
Correct Answer: A
Rationale: Staphylococcus aureus is the most common pathogen in CGD, causing abscesses due to impaired oxidative killing by phagocytes.
Question 3 of 5
Which of the following mediates an early response to viral infections by the innate immune system?
Correct Answer: D
Rationale: Interferons are cytokines produced early in viral infections by the innate immune system to inhibit viral replication and activate immune cells, unlike the other options which are either adaptive (lymphocytes, vaccines) or less specific to viruses (complement).
Question 4 of 5
Phagocytes ingest particular matter into cells for degradation. Which of the following is NOT considered a phagocyte?
Correct Answer: D
Rationale: Lymphocytes (B and T cells) are not phagocytic; they mediate adaptive immunity, unlike macrophages, neutrophils, and eosinophils which engulf pathogens.
Question 5 of 5
Eosinophils
Correct Answer: C
Rationale: Eosinophils are specialized for killing parasites, such as helminths, via granule release, not phagocytosis or histamine release.