Which is the first investigation to be done in case of Neonate presenting with frothiness in mouth and dyspnoea?

- Two problems Collection of saliva in the mouth Air coming inside the mouth - Therefore, saliva is not going into the esophagus - Esophageal atresia with tracheoesophageal fistula Diagnosis: The inability to pass a NG int the stomach is a cardinal feature for the diagnosis of EA If gas is present in the GIT below the diaphragm, an associated TEF is confirmed Inability to pass a NG tube with absent radiographic evidence for gastrointestinal gas is viually diagnostic of an isolated EA without TEF For H-type: tracheobronchoscopy + endoscopy should be performed