A major component of safe thoracic anaesthesia is the appropriate use of endobronchial tubes, double-lumen tubes (DLTs) and bronchial blockers. A bronchial blocker is effectively a small balloon on a long catheter with a central lumen which, when placed endobronchially, occludes ventilation on that side and allows egress of gas from the isolated lung. Placement of DLT is awkward than a single lumen tube, and a difficult airway produces additional complexity. The introducer is a useful aid to intubation with single lumen tube by direct laryngoscopy but the normal introducer is too short to place a DLT in the same manner. The tube exchange catheters are supplied with rapi-fit connectors to allow low or high pressure ventilation in case of difficulty or desaturation during the tube exchange. Oral flexible fibreoptic intubation with DLT is a possible solution, and the fibrescope can be used to place it in the correct bronchus.