• Ann Emerg Med · Jul 1987

    Comparative Study

    The esophageal tracheal combitube: preliminary results with a new airway for CPR.

    • M Frass, R Frenzer, F Zdrahal, G Hoflehner, P Porges, and F Lackner.
    • Ann Emerg Med. 1987 Jul 1;16(7):768-72.

    AbstractWe developed the esophageal tracheal combitube (ETC), a plastic twin-lumen tube, one lumen resembling an esophageal obturator airway (EOA), the other resembling an endotracheal airway (ETA). Ventilation is possible after either esophageal or tracheal placement of the ETC. A specially designed pharyngeal balloon replaces the mask of the EOA and provides sufficient seal, preventing the escape of air through the mouth and nose. The effectiveness of ventilation with the ETC in esophageal position was tested in a crossover study comparing ETC and ETA during routine operations in 31 patients. Blood gas measurements showed a significantly higher (P less than .001) mean arterial oxygen tension during ventilation with the ETC. The reason for this is not yet clear. Preliminary investigations during CPR in 21 arrest patients indicate that the ETC is as effective as the ETA.

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