Comparative Evaluation of Macintosh, MacCoy and Airtraq Laryngoscope in Simulated Difficult Laryngoscopy Using Rigid Neck Collar

Airtraq laryngoscope is an optical laryngoscope which allows visualization of vocal cord as a reflected image through multiple lenses and prisms. MacCoy laryngoscope is a modification of Macintosh laryngoscope. It has a lever which, when pressed, moves its flexible tip. In the investigators' study, the researchers compared the performances of Airtraq laryngoscope with MacCoy and Macintosh laryngoscopes in simulated difficult laryngoscopy using a rigid neck collar. The researchers recruited 120 patients and randomly divided those patients into three equal groups i.e. 30 patients in each group. These three groups are 1-Airtraq, 2-MacCoy and 3-Macintosh. The researchers compared efficacy and safety in these three laryngoscopes. The researchers compared efficacy in terms of time of intubation, ease of intubation, overall success, Intubation difficulty score, visualization of vocal cord in terms of POGO (percentage of Glottic Opening) score. The researchers compared safety in terms of hemodynamic pressor response and airway trauma.