The Double Barrel Technique. The image demonstrates the technique, with two nasal trumpets in the upper airway. The left nasal cavity and upper airway has a longer nasal trumpet (yellow) and the right nasal cavity and upper airway has a shorter nasal trumpet (blue). The combination of the two nasal trumpets provides a physical method for stenting the upper airway open. Note: the image is a modified version of a contribution that the first author of this manuscript (Macario Camacho) made to Wikimedia Commons (open source images).