Fig. (7) The Tritube® is a narrow-bore cuffed endotracheal tube with inner and outer diameters 2.4 mm and 4.4 mm, respectively. A Murphy eye is featured at the distal end. The ventilation lumen is attached to the Ventrain® while an inflatable cuff seals the airway. A pressure measurement lumen permits continuous intratracheal pressure measurements. As described in the text, this device may be useful in both elective and emergency airway settings.

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