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The Laryngeal Mask Airway Supreme (LMAS) is a new (2007), single-use airway device that the manufacturer claims to provide easier insertion and higher seal pressure than other laryngeal mask airways and to allow access for nasogastric tube insertion. Researchers evaluated these claims in a prospective study of 100 women without anticipated difficult airways who underwent LMAS insertion after induction of general anesthesia for elective surgery. If an air leak was heard after the cuff was inflated, the mask was repositioned (inserted more deeply or moved to one side or the other) until no leak was present. If ventilation was not possible, the mask was removed and reinserted.
Mask insertion was successful in 94 patients on the first attempt an…