Figure 11 Rapid bedside bronchogram in a child with marked ventilation difficulties and high endotracheal tube (*) demonstrating extensive long segment tracheal narrowing (broken arrows). There is extreme narrowing at the carina with almost total loss of contrast at the carina. The contrast is dense, indicating severe tracheal obstruction with littleĀ  contrast not passing through the carinal obstruction. The patient required ECMO to maintain gas exchange.