Nokea
A newborn appears with abdominal distension and bilious vomiting. Abdominal x-ray reveals a double bubble sign. Most likely diagnosis is:
- A. Pyloric stenosis
- B. Duodenal atresia
- C. Hirschsprung disease
- D. Meconium ileus
Correct Answer: B
Rationale: Duodenal atresia shows a double bubble sign with bilious vomiting, per AAP. A, C-E have different presentations.
You may also like to solve these questions
A 2-year-old with croup requires
- A. Antibiotics
- B. Cool mist
- C. Hot steam
- D. Oxygen therapy
Correct Answer: B
Rationale: Cool mist B relieves croup symptoms, per document p22, 4.
A child is diagnosed with hypoalbuminemia. Her total serum calcium level is normal. Most likely associated finding that may be missed is:
- A. Hypocalcemia
- B. Hypercalcuria
- C. Hypomagnesemia
- D. Hypercalcemia
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.
A 3-month-old infant presents with tachypnea and poor feeding. Chest x-ray shows cardiomegaly and pulmonary edema. Most likely diagnosis is:
- A. Pneumonia
- B. Congestive heart failure
- C. Bronchiolitis
- D. Cystic fibrosis
Correct Answer: B
Rationale: CHF shows cardiomegaly and edema, per AHA. A, C-E differ.
The most common site for temperature in a 2-year-old is
- A. Axillary
- B. Oral
- C. Rectal
- D. Temporal
Correct Answer: A
Rationale: Axillary A is safest for toddlers, per document p34, 4.
A 5-year-old girl presents with abdominal pain and vomiting. CT shows a twisted mesentery. Most likely diagnosis is:
- A. Appendicitis
- B. Intussusception
- C. Malrotation with volvulus
- D. Meckel diverticulum
Correct Answer: C
Rationale: Malrotation with volvulus features pain, vomiting, and twisted mesentery, per AAP. A, B, D, E differ in CT.