• T Inada, F Uesugi, S Kawachi, and K Takubo.
• Department of Anaesthesia, Matsue Red Cross Hospital, Shimane, Japan.
• Anaesthesia. 1996 Sep 1;51(9):823-6.

AbstractThe distance from the carina to the tip of the tracheal tube was measured with a fibreoptic bronchoscope in 21 consecutive patients undergoing elective laparoscopic cholecystectomy. After placement of an Eschmann tracheal tube with a printed intubation guide mark at the vocal cords, the distance was 28 (15) [5-54] mm (mean (SD) [range]). The tube was then repositioned so that the distance was 34 (3) [30-40] mm from tip of the tube to the carina. After creation of pneumoperitoneum, the distance was significantly decreased to 26 (5) [17-35] mm (p < 0.005), which was not significantly altered by subsequent moving of the patient to the reverse Trendelenburg and left lateral tilt position. The maximum distance of tube migration was 8 (4) [0-15] mm. Four out of 21 patients would have been at risk of bronchial intubation after pneumoperitoneum if the tube had not been repositioned. Placement of the tube according to the guide mark is not recommended for laparoscopic cholecystectomy.

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