Van Zundert TC, Brimacombe JR. Acta Anaesthesiol Belg. 2012; 63(1): 35-41
Random allocation of 150 patients to either i-gel®, LMA ProSeal® or LMA Supreme® to compare, primarily, oropharyngeal leak pressure and changes in pressure between 30 and 60 minutes after insertion. Results in this case showed that there were no significant differences in leak pressure.
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