A 1-day-old boy presents with severe respiratory distress, tachypnea (RR 62/min), and tachycardia (HR 168/min). Physical examination reveals a scaphoid abdomen and diminished breath sounds on the left. Chest radiography demonstrates bowel loops in the left hemithorax with mediastinal shift. Arterial blood gas shows hypoxemia (SpO2 88%). There is no cyanosis with supplemental oxygen. Failure of which embryologic structure most likely caused this congenital diaphragmatic hernia?
- A)Laryngotracheal diverticulum
- B)Dorsal mesentery of esophagus
- C)Pleuroperitoneal membranesGABARITO
- D)Septum transversum
- E)Body wall musculature
Explicação
A posterolateral congenital diaphragmatic hernia, or Bochdalek hernia, results from failure of the pleuroperitoneal membranes to close the pleuroperitoneal canals. Herniation of abdominal contents into the thorax impairs lung development and causes neonatal re... Ver explicação completa e trilha adaptativa →