Gasteiger L, Brimacombe J, Oswald E, Perkhofer D, Tonin A, Keller C, Tiefenthaler W. Acta Anaesthesiol Scand 2012; 56(10): 1321-1324
Fifty-one children aged 1.5-6 years, weighing 10-25kg, were studied randomly using either the size 2 LMA ProSeal® or i-gel®. The hypothesis tested was that oropharyngeal leak pressure and fiberoptic position of the airway tube differ between the two devices, with results proving similar.
Link to abstract.