Endotracheal intubation is an integral part of general anaesthesia for most of the patients undergoing surgery. Difficulty in ventilation and failure to intubate are the principal causes of hypoxemia, aspiration, ischemic brain injury, cardiovascular complications and possibly leading to death. Airway accessories have been developed over the years like different types of blades, airways, bougies, supraglottic devices, fibreoptic laryngoscope and C-MAC video laryngoscope for better vision and securing the airway.

C-MAC(Concurrent Media Access Control) video laryngoscope (Karl Storz, Germany) is one of such indirect laryngoscope meant for videoscope guided intubation. It is introduced in the oral cavity and the operator views the larynx on the video screen which guides the intubation.

McCoy laryngoscopy is a traditional method in use .It has a hinged tip that aids in improving the Cormack and Lehane laryngoscopic view by 1 grade by lifting up the epiglottis. C-MAC is not available still in many centres in India.

There are limited literatures comparing the C-MAC and McCoy laryngoscope in predicted difficult airway, so we designed a randomised control study to compare the effectiveness of  McCoy and CMAC laryngoscopy   in predicted difficult airway in elective surgeries under EEG entropy-based anaesthesia. This entropy based anaesthesia will ensure uniform and adequate depth of anaesthesia during and after intubation when we compare both methods.

In this study, we intend to compare both techniques for difficult intubation, in terms of success rates.