ArticleInternational journal of critical illness and injury science
Comparison of McCoy, Macintosh, and Truview laryngoscope for bougie-aided naso-tracheal intubation: A randomized controlled study.
Article in International journal of critical illness and injury science. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Video laryngoscopes are commonly used along with Macintosh and McCoy laryngoscopes for Nasotracheal intubation (NTI). The purpose of this study was to evaluate the performance of McCoy, Macintosh, and Truview laryngoscopes during bougie-aided NTI with respect to intubation time, success rate, and hemodynamic changes during the procedure. Methods: Forty-five American Society of Anesthesiologists (ASA) I-II adult patients, with Mallampati grade 1-4, requiring NTI, were enrolled after taking written informed consent. ASA III/IV, restricted mouth opening, and body mass index >30 were excluded from the study. Patients were randomly allocated to intubate with one of the three laryngoscopes (McCoy, Macintosh, and Truview) and the anesthesiologists were well experienced with all of them. The primary outcome was intubation time and secondary outcomes included first attempt success rate, external laryngeal manipulation, Cormack-Lehane (CL) grade, and hemodynamic responses. Results: The intubation time of McCoy, Macintosh, and Truview, was 86.87 ± 15.92, 82.87 ± 16.46, and 79.93 ± 14.53 (mean ± standard deviation) seconds, respectively, which is comparable with Truview being the shortest. CL grade 1 was obtained more in the Truview group (53.3%) compared to the other two groups, while CL grade 3 was obtained in 20% each in McCoy and Macintosh groups. Conclusions: McCoy, Macintosh, and Truview laryngoscopes were comparable in performance during bougie-aided NTI, with Truview having the shortest intubation time and better visualization.
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