Figure 3: The proper position of a left-sided DLT when seen with a fiberoptic bronchoscope. (A) View of the tracheal carina, towards the left side the endobronchial lumen is visible, the left main bronchus with the outer surface of the endobronchial balloon is seen below tracheal carina. (B) View of the 3 orifices of the right upper lobe bronchus (apical, anterior, and posterior segments). (C) Clear view of the left upper and left lower bronchus.