ATI LPN
ATI PN Pediatrics Proctored Exam 2020 Questions
Question 1 of 5
A 5-month-old infant presents with hypotonia and tongue thrusting. Labs show elevated ammonia. Most likely diagnosis is:
Correct Answer: B
Rationale: Urea cycle disorder causes hypotonia and hyperammonemia, per NORD. A, C-E lack ammonia elevation.
Question 2 of 5
Most common cause of delayed puberty in boys is:
Correct Answer: C
Rationale: Idiopathic is the most common cause of delayed puberty in boys, per AAP (doc p149, Q566).
Question 3 of 5
A 10-year-old boy appears with fatigue, weight gain, and constipation. Labs reveal elevated TSH and low free T4. Most likely diagnosis is:
Correct Answer: A
Rationale: Hypothyroidism fits fatigue, weight gain, constipation, and thyroid labs, per AAP (doc p150, Q582).
Question 4 of 5
A 5-year-old boy with type 1 diabetes appears with lethargy and vomiting. Labs reveal blood glucose of 600 mg/dL and pH of 7.1. Most likely diagnosis is:
Correct Answer: B
Rationale: Diabetic ketoacidosis fits lethargy, hyperglycemia, and acidosis, per AAP (doc p151, Q598).
Question 5 of 5
A 2-month-old infant presents with projectile vomiting. Labs show hypochloremic alkalosis. Most likely diagnosis is:
Correct Answer: B
Rationale: Pyloric stenosis causes vomiting and hypochloremic alkalosis, per AAP. A, C-E differ.