Healthcare professionals encounter substantial difficulties when dealing with intubating patients with a challenging airway condition.This complexity arises from a variety of factors such as anatomical irregularities, limited mouth opening or distorted airway structures all of which obstruct a clear view and hinder tracheal access during intubation. For critically ill adults undergoing emergency tracheal intubation, failure to intubate the trachea on the first attempt occurs in upto 20% of the cases and is associated with severe hypoxemia and cardiac arrest. Videolaryngoscope has emerged as a vital method for this purpose, offering  a clearer view of laryngeal inlet. However, even with this improved visibility, successfully guiding the tube into the trachea remains persistent challenge. Adjucts like bougie and stylet are used in conjunction with video laryngoscopes to enhance the success rate.This study aims to evaluate and compare the effectiveness of using pre-shaped bougie and stylet as adjuncts with C-MAC D-Blade video laryngoscope in achieving successful intubation in simulated difficult airway. The number of attempts taken to intubate weighs heavily on the patient outcome. Hence,we would like to take this study and find out whether pre-shaped bougie increase the incidence of successful intubation on first attempt in simulated difficult airway.