We conducted a randomised single-blind controlled trial comparing the LMA-Unique (LMAU) and theAMBUAuraOnce (AMBU)\ndisposable laryngeal mask in spontaneously breathing adult patients undergoing general anaesthesia. Eighty-two adult patients\n(ASA status Iââ?¬â??IV) were randomly allocated to receive the LMAU or AMBU and were blinded to device selection. Patients received\na standardized anesthetic and all airway devices were inserted by trained anaesthetists. Size selection was guided by manufacturer\nrecommendations. All data were collected by a single, unblinded observer.When compared with the LMAU, the AMBU produced\nsignificantly higher airway sealing pressures (AMBU 20Ã?±6; LMAU 15Ã?±7 cmH2O; P = 0.001). There was no statistical difference\nbetween the two devices for overall success rate, insertion time, number of adjustments, laryngeal alignment, blood-staining, and\nsore throat (P = 0.05). The AMBU AuraOnce disposable laryngeal mask provided a higher oropharyngeal leak pressure compared\nto the LMA Unique in spontaneously breathing adult patients.
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