ATI LPN
ATI Pediatrics Practice Questions Questions
Question 1 of 5
What is the risk the fetus will be affected?
Correct Answer: B
Rationale: Spinal muscular atrophy (SMA) type 2 is autosomal recessive. If the mother’s new partner is a carrier (assuming population risk isn’t specified), the risk is 1 in 4 (Choice B): 25% chance the fetus inherits two mutated SMN1 alleles (50% from each carrier parent). 1 in 2 (Choice A) applies if one parent is affected. 1 in 50 (Choice C) or 1 in 200 (Choice D) suggest unrelated carrier frequencies, not applicable without data. 1 in 4 is standard for recessive inheritance with two carriers.
Question 2 of 5
The best growth chart indicator in patients with acute malnutrition is:
Correct Answer: C
Rationale: Weight-for-height best detects acute malnutrition (wasting), per WHO. BMI is less specific in kids, and B-D assess other aspects.
Question 3 of 5
Biological causes of mild mental retardation includes all of the following except:
Correct Answer: A
Rationale: Excessive fetal movements aren’t a recognized cause of mild mental retardation; they’re nonspecific. B-E are established contributors (CDC).
Question 4 of 5
Prenatal diagnosis of affected male fetus with adrenoleukodystrophy is made by:
Correct Answer: A
Rationale: Elevated VLCFA in cultured amniocytes diagnoses adrenoleukodystrophy prenatally (NORD). B-E are not diagnostic.
Question 5 of 5
A child is diagnosed with hypoalbuminemia. Her total serum calcium level is normal. Most likely associated finding that may be missed is:
Correct Answer: D
Rationale: Hypoalbuminemia lowers bound calcium; a normal total calcium suggests hypercalcemia in ionized form, often missed (UpToDate). A-C, E don’t fit.