Comparison of the Clinical Performances of Air-Q SP 3G and i-Gel by Novice Intubators During Manual In-line Neck Stabilization: A Randomized Controlled Trial

Establishing a definitive airway defined as a tube placed in the trachea with cuff inflated below the vocal cords is the first priority in the airway management of the pre-hospital trauma patient, according to the last edition of the Advanced Trauma Life Support (ATLS) textbook, of the American College of Surgeons. However, studies revealed that the success rate of tracheal intubation in the prehospital setting using direct laryngoscopy (DL), the standard intubation technique is suboptimal. The Advance Trauma Life Support suggested the use of Supraglottic Airway Devise (SAD) in managing the difficult airway. The air-Q SP 3G was introduced as an alternative for managing the difficult airway. The i-gel is proposed as supraglottic device made of a medical grade thermoplastic elastomer. The unique design of both devices is that a cuff is not needed to be inflated .

A randomize controlled trail will be conduce. Participants will insert the both supraglottic devices to compare performance of ventilation and oxygenation of the patients.

The insertion will be performed on age 18-75 year patients, scheduled for elective surgery with general anesthesia. The SAD use in the study will be a single use i-gel size 4 or 5 and the air-Q SP 3G- size 4 or 5 For induction of anesthesia all patients will receive premedication. After 3 min of preoxygenation anesthesia will induce with up to 2 mcg/Kg fentanyl and 2-3 mg propofol Neuromuscular blockade will be obtained with rocuronion.

The participant will performed one insertion of the i-gel or the air-Q SP 3G on the patient while manual in-line stabilization of the neck Primary outcome: time to success insertion of SAD Secondary outcome : duration in seconds of insertion