для подтверждения диагноза нужна бронхоскопия, не фгдс, если отверстие маленькое, используют метилен. синий
Bronchoscopy - the main methods to diagnose TEF, are able to identify the fistulas in most cases. However, recognition of the tracheal or bronchial opening in smaller fistulas can be challenging. Both orally administered Methylene Blue before bronchoscopy and observation of bubbles leaked from the airway are helpful to identify small fistulas.
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