The importance and prevalence of supraglottic airway devices (SGDs) in airway management has increased considerably in recent years. The second generation supraglottic airway devices such as Laryngeal mask airway Proseal,  i-gel and Laryngeal mask airway Supreme have overcome the limitations of cLMA . They come with an inbuilt gastric drainage tube to empty stomach contents and are designed to provide better airway protection and higher oropharyngeal seal pressures as compared to first generation devices. These devices are a reasonable alternative choice to endotracheal intubation when performing anesthesia for procedures accompanied by high peak airway pressure, such as laparoscopic surgery. There is paucity of comparative studies between Ambu AuraGain and i- gel in literature. Therefore, in this study we will evaluate and compare clinical efficacy of Ambu AuraGain with i-gel as a ventilatory device in patients undergoing laparoscopic cholecystectomy under general anaesthesia with controlled ventilation. This study will be conducted in 80 adult patients of 18 to 60 years of age, of either gender, American society of Anaesthesiologists (ASA) physical status I and II, weighing 30 to 70 kg, undergoing elective laparoscopic cholecystectomy surgery under general anaesthesia with controlled ventilation in supine position.

Patients with anticipated difficult airway, cervical spine pathology, operation time greater than 4 hours, high risk of aspiration, preoperative sore throat, poor dentition with high risk of damage and pregnancy will be excluded. Block randomization in series of blocks of ten will be done to allocate patients to two groups of 40 each based on sealed envelope method.  After standard anesthesia technique the two devices will be inserted by standard technique an anesthesiologist who has experience of more than 30 successful insertion with both the devices. Airway manipulations such as jaw thrust or lateral rotation of device while inserting the device, head and neck flexion or extension, chin lift and change in the depth of device needed for achieving effective airway will be noted. Achieving both an effective airway and a successful insertion of gastric tube will be considered as a successful insertion of the device. The following parameters will be recorded oropharyngeal leak pressure after insertion of device , number of attempts, time for achieving effective airway, number of patients requiring manipulation, ease of insertion of device, ease of gastric catheter insertion, anatomical alignment of device, leak percent (percentage loss of set inspiratory volume) and adverse events if any. A p value of <0.05 will be considered statistically significant.The data will be entered in MS EXCEL spreadsheet and analysis will be done using latest version of Statistical Package for Social Sciences (SPSS) .