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Materials and Methods: Twelve Asa II-III patients were included. After anesthethic induction and under adequate hypnosis and muscle relaxation we made two attempts to intubate with direct laryncoscopy and DLT. The Cormack Lehane classification was III and IV in all cases. After failed intubation with direct laryngoscopy, we used Airtraq. In all cases an Eschmann guide was inserted through the bronchial lumen of the DLT. After obtaining a good glotic vision with Airtraq, we placed the Eschmann in the vocal cords and through it we advanced the DLT until the bronchial cuff passed through the vocal cords under direct vision. The Eschmann was withdrawn and after the DLT was advanced completely. We checked the DLT position with capnography, auscultation, and fiberscopy. The endpoints were the number of intubation attempts, duration of the intubation attempt, and the rate of successful placement of the DLT …