*7.3.2.1 Introduction*

LMA Supreme™(Teleflex®, USA) is a second generation, single use, SGA device which facilitate ease of placement and in-situ airway stability. It forms an effective seal first with the oropharynx (oropharyngeal seal) and a second seal with the upper oesophageal sphincter (the oesophageal seal). This devise is designed incorporating features of a cLMA, pLMA, and LMA Fastrach [64–66]. SLMA delivers measured oropharyngeal leak pressures up to 37 cm H2 O [67].
