A 6-hour-old male newborn presents with bilious vomiting and abdominal distension. Vital signs show HR 145 bpm, RR 42/min, BP 65/40 mmHg, and temp 37.2°C. Prenatal ultrasound documented polyhydramnios. Current abdominal radiography reveals the classic double-bubble sign with air-fluid levels; notably, distal bowel gas is absent. The infant has not passed meconium. Failure of which developmental process most likely caused this condition?
- A)Abnormal migration of ventral pancreatic bud
- B)Lateral palatine shelves
- C)Failure of recanalizationGABARITO
- D)Failure of fusion of pancreatic buds
- E)First pharyngeal arch
Explicação
Duodenal atresia results from failure of recanalization of the embryonic gut lumen. The classic findings are polyhydramnios, early bilious vomiting, and the double-bubble sign on imaging. Ver explicação completa e trilha adaptativa →