A 24-year-old man fell from the third floor. He developed an unilateral pulmonary parenchymal injury and a significant haemoptysis following blunt thoracic trauma. Because of its abundance, it was not possible to obtain adequat oxygenation. To protect controlateral lung from inhalation and to achieve adequat oxygenation, we used double lumen endotracheal tube, lung separation and one lung ventilation. To solve potential airway management difficulties (haemorrhage, trauma, cervical immobilization), we used airway exchange catheter (Cook) to place the double lumen endotracheal tube. Haemoptysis has been controlled by embolization of the right bronchial artery.