A 3-year-old girl presented with recurrent attacks of chest infection and frequent episodes of chronic diarrhea, stool examination revealed Giardia lamblia and serum IgA level was very low. Regarding this condition, all the following are true EXCEPT

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Pediatric Immunization NCLEX Questions Quizlet Questions

Question 1 of 5

A 3-year-old girl presented with recurrent attacks of chest infection and frequent episodes of chronic diarrhea, stool examination revealed Giardia lamblia and serum IgA level was very low. Regarding this condition, all the following are true EXCEPT

Correct Answer: A

Rationale: Selective IgA deficiency is not typically autosomal dominant; it has a complex, often sporadic inheritance. The other statements align with its features, including normal B cells and no routine IVIG use.

Question 2 of 5

A 9-year-old boy with acute lymphoblastic leukemia on chemotherapy, presented with fever, aphthous stomatitis, and fatigue for the last 5 days. His absolute neutrophil count (ANC) was 450/μL and hemoglobin level was 10 gm/dl. The NEXT appropriate therapeutic measure is

Correct Answer: D

Rationale: Severe neutropenia (ANC <500/μL) with fever requires immediate broad-spectrum antibiotics to prevent sepsis, a common complication in chemotherapy patients.

Question 3 of 5

To reduce the number of bacterial infection in patients with chronic granulomatous disease (CGD), they should be given daily

Correct Answer: D

Rationale: Trimethoprim-sulfamethoxazole is standard prophylaxis in CGD, reducing bacterial infections by targeting common pathogens like S. aureus.

Question 4 of 5

Which of the following immune system components would NOT recognize a macromolecule epitope (binding site)?

Correct Answer: A

Rationale: Phagocytes engulf pathogens nonspecifically and do not recognize specific epitopes, unlike T and B lymphocytes or antibodies which bind specific antigenic sites.

Question 5 of 5

Which of the following components of the innate immune system involves cytokines produced by macrophages, which are produced during infection?

Correct Answer: D

Rationale: Interferons are cytokines produced by macrophages and other cells during infection to combat viruses, a key innate response.

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