Figure 49-15 A, Sketch of the red rubber (nondisposable) Carlens double-lumen endotracheal tube. B, Close-up of placement of the red rubber Carlens double-lumen endotracheal tube at the carina. Note that the left endobronchial lumen and carinal hook straddle the carina. (From Benumof JL: Anesthesia for Thoracic Surgery. Philadelphia, WB Saunders, 1987.)


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