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The GuardianCPV is a new silicone-based, single-use supraglottic device with a gastric drainage port and an integrated cuff pilot valve (CPV) that visually indicates changes in cuff pressure. To compare seal pressures to those achieved with the LMA Supreme, researchers randomized 120 healthy nonobese women without known difficult airways who were undergoing elective surgery to insertion of either device for airway management. Oropharyngeal leak pressures and fiber-optic assessment of position were recorded at cuff volumes of 0, 10, 20, 30, and 40 mL. Three experienced anesthetists performed 20 insertions with each device.
Patient characteristics were similar between groups. All device insertions were successful. The GuardianCPV had significa…