Mitchell CA, Riddle ML, Pearson NM, Tauferner DH, Carl R. Annals Of Emergency Medicine 2010;5(3):S25
Study to determine if a bougie could be successfully placed in a cadaver by emergency medicine providers using four supraglottic airway devices: LMA Supreme®, i-gel®, LMA® and KingLT®. Time to placement, confidence in the procedure and correct placement via direct laryngoscopy post-removal were recorded. No great significant differences in most areas, however i-gel® was much quicker than KingLT® to successfully insert, and generally outperformed it. LMA Supreme® and i-gel® considered the better devices for such a procedure, although the authors concede that using a cadaver did inhibit the study.
Gosalia N, Khan RM, Kaul N, Sumant A. J Anaesth Clin Pharmacol 2009; 25(3): 345-347
In this study, the i-gel®’s placement and performance were studied for insertions carried out with and without the use of a gum elastic bougie. 50 patients were randomised into two groups. In the first group, the i-gel® was inserted using the standard method. In the second group, a bougie was used to insert the device via the gastric channel. The time taken for insertion and the number of attempts needed were similar for both methods. Leakage and patient discomfort were less common when the bougie was used. The authors conclude that using a bougie improves i-gel® placement without increasing insertion time or adverse effects.
Link to abstract.