Comparison of Airtraq™, McCoy™ and Macintosh laryngoscopes for endotracheal intubation in patients with cervical spine immobilisation: A randomised clinical trial

Indian Journal of Anaesthesia
Vinod HosalliShivanand Hulakund

Abstract

The study aimed at comparing the performance of the novel optical Airtraq™ laryngoscope with the McCoy™ and conventional Macintosh laryngoscopes for ease of endotracheal intubation in patients with neck immobilisation using manual inline axial cervical spine stabilisation (MIAS) technique. Ninety consenting American Society of Anaesthesiologist's physical status I-II patients, aged 18-60 years, scheduled for various surgeries requiring tracheal intubation were randomly assigned into three groups of thirty each to undergo intubation with Macintosh, Airtraq™, or McCoy™ laryngoscope with neck immobilisation by MIAS technique. The ease of intubation based on Intubation difficulty scale (IDS) score, Cormack-Lehane grade of glottic view, optimisation manoeuvres and impact on haemodynamic parameters were recorded. Statistical analysis was performed with ANOVA and Bonferroni correction for post hoc tests. All patients in three groups had a comparable demographic profile and were successfully intubated. The Airtraq™ laryngoscope significantly reduced the IDS (mean - 0.43 ± 0.81) as compared with both McCoy™ (mean - 1.63 ± 1.49, P = 0.001) and Macintosh laryngoscope (mean -2.23 ± 1.92, P < 0.001) and improved the Cormack-Lehane glottic v...Continue Reading

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