Uppal V, Gangaiah S, Fletcher G, Kinsella J. Br J Anaesth 2009; 103(6): 882-885
In this study, the i-gel® and LMA Unique® were both used in 39 patients. Leak pressure, insertion attempts, number of airway manipulations and leak volumes were similar for both devices. Insertion time was significantly less for the i-gel® at 12.2s compared to 15.2s for the LMA Unique®. It can be concluded that the i-gel® is a reasonable alternative to the LMA Unique® during controlled ventilation.
Link to abstract.