Jaoua H, Djaziri L, Bousselmi J, Belhouane H, Skander R, Ben Maamer A, Cherif A, Ben Fadhel K. Tunis Med. 2014 Apr;92(4):239-44
100 patients scheduled for short duration elective surgery were included, with ease of insertion, leak fraction, gastric leak, complications and ease of insertion among the parameters measured. Success rate of insertion was 99%, with first-attempt success at 92%. Authors conclude that the I-gel can be used 'safely and effectively'.
Link to abstract