• Anaesth Intensive Care · Oct 2000

    Comparative Study Clinical Trial

    The McCoy laryngoscope, external laryngeal pressure, and their combined use.

    • T Harioka, K Nomura, K Mukaida, S Hosoi, and S Nakao.
    • Department of Anaesthesia, Shimada Municipal Hospital, Japan.
    • Anaesth Intensive Care. 2000 Oct 1;28(5):537-9.

    AbstractThe efficacy of the McCoy laryngoscope, external laryngeal pressure, and their combination to improve the laryngoscopic view was evaluated in 219 patients and compared with the Macintosh laryngoscope. An experienced laryngoscopist performed laryngoscopy twice using the Macintosh laryngoscope and the McCoy laryngoscope in a random sequence, and external laryngeal pressure was applied in each laryngoscopy with the laryngoscopist's right hand. The laryngoscopic view obtained was graded on our modified Cormack's method. Without external laryngeal pressure, the McCoy laryngoscope provided a better laryngoscopic view than that obtained by the Macintosh laryngoscope (P < 0.001, signed rank test), but the view was worse than that with the Macintosh laryngoscope under external laryngeal pressure (P < 0.001). The McCoy laryngoscope combined with external laryngeal pressure provided a better view than the Macintosh laryngoscope with external laryngeal pressure (P < 0.001).

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