Fig. 3. Box plots of pressures in the pharynx. ( A ) Box plots of pressures at the recommended cuff volumes in the pharynx. w = P < 0.05, Fastrach ™ intubating laryngeal mask airway ( ILMA ™) versus all other devices. x = P < 0.05, EasyTube® (EzT) and Laryngeal Mask Airway ™ ( LMA ™) versus Combitube® (ETC), Laryngeal Tube (LT), and ProSeal ™ ( PLMA ™). y = P < 0.05, ETC versus LT and PLMA ™. z = P < 0.05, LT versus PLMA ™. ( B ) Box plots of maximal pressures in the pharynx. x = P < 0.05, ILMA ™, LMA ™, and PLMA ™ versus EzT, ETC, and LT. ( C ) Box plots of pressures at 40-ml cuff volume in the pharynx. v = P < 0.05, ILMA ™ versus all other devices. w = P < 0.05, LMA ™ versus EzT, ETC, LT, and PLMA ™. x = P < 0.05, ETC versus EzT, LT, and PLMA ™. y = P < 0.05, EzT versus LT and PLMA ™. z = P < 0.05, PLMA ™ versus LT.