What are the tests for esophageal atresia?

Esophageal atresia: Esophageal atresia is a congenital defect. Feeding the affected infant leads to choking, coughing and blue spells. Tests used to diagnose esophageal atresia include inability to pass a small feeding tube from the nose or mouth into the stomach. A plain x-ray of the esophagus may show air in the "pouch" of the atretic portion and coiled up feeding tube in that portion.