A 1 day old male newborn develops coughing, cyanosis, and emesis during his first feeding. The pregnancy was complicated by polyhydramnios. Physical examination shows excessive oral secretions and abdominal distension. A nasogastric tube cannot be advanced into the stomach. Which of the following embryologic abnormalities is the most likely explanation for this infant's condition?
- A)Failure of tracheoesophageal septationGABARITO
- B)Abnormal migration of neural crest cells into the aortic arches
- C)Failure of bronchial bud branching
- D)Persistence of the pleuroperitoneal membranes
- E)Failure of laryngotracheal diverticulum formation
Explicação
Failure of tracheoesophageal septation is correct. The combination of polyhydramnios, drooling, inability to pass a nasogastric tube, and cyanosis with feeding is classic for esophageal atresia with distal tracheoesophageal fistula. This results from abnormal ... Ver explicação completa e trilha adaptativa →