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Double-Lumen Endotracheal Tube Positioning

Double-Lumen Endotracheal Tube Positioning▶ Watch on YouTube — age-restricted, cannot embed here

Imaging findings

Chest radiograph demonstrates a double-lumen endotracheal tube in place. A radiopaque ring or band is visible, corresponding to the proximal margin of the bronchial balloon positioned in the left main bronchus, and a distinct line is seen marking the tracheal lumen.

Key takeaways

Double-lumen tubes (often used for one-lung ventilation) require precise positioning, typically in the left main bronchus. Radiologists can assess proper placement on radiographs by identifying the radiopaque marker band, which should lie just distal to the carina, ensuring the bronchial balloon is properly seated within the bronchus without herniating proximally or advancing too far distally.

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