Arévalo-Ludeña J, Arcas-Bellas JJ, Alvarez-Rementería R, Alameda LE. J Clin Anesth. 2016 Dec;35:287-292
85 patients with at least three difficult airway predictors were included, with insertion time, intubation time and oxygen saturation outcomes measured, amongst others. No serious adverse events were recorded and no airway damage reported. Authors conclude that fibreoptic-guided intubation through the i-gel is a 'safe and effective' technique.
Link to abstract.