ATI RN
Pediatric Nursing Certification Practice Questions Questions
Question 1 of 5
Hereditary methemoglobinemia is most commonly due to deficiency of which enzyme?
Correct Answer: A
Rationale: Cytochrome b5 reductase deficiency impairs the reduction of methemoglobin back to functional hemoglobin, causing methemoglobinemia.
Question 2 of 5
Acute hepatitis A criteria:
Correct Answer: D
Rationale: Hepatitis A is an RNA virus, and its extrahepatic manifestations include cutaneous vasculitis and arthritis.
Question 3 of 5
Which of the following indicates severe laryngitis?
Correct Answer: D
Rationale: Diphasic stridor suggests significant airway involvement, indicating severe laryngitis, often seen in croup or epiglottitis.
Question 4 of 5
The MOST common hypersensitivity response of the eye is
Correct Answer: A
Rationale: Allergic conjunctivitis is the most frequent hypersensitivity response in the eye, triggered by environmental allergens and mediated by IgE.
Question 5 of 5
In utero radiation exposure is associated with an excess risk of dying from leukemia before age 10 yr. Of the following, the MOST acceptable risk percent is
Correct Answer: C
Rationale: Studies show that in utero radiation exposure increases leukemia risk, with an estimated excess risk of 75%. Higher percentages are unrealistic, while lower ones underestimate the risk.