A randomized comparison of the i-gel™ with the self-pressurized air-Q™ intubating laryngeal airway in children

BackgroundSupraglottic airway devices with noninflatable cuff have advantages in omitting the cuff pressure monitoring and reducing potential pharyngolaryngeal complications. Typical devices without cuff inflation available in children are the i-gel and the self-pressurized air-Q intubating laryngeal airway (air-Q SP). To date, there is no comparative study between these devices in pediatric patients. AimThe purpose of this randomized study was to compare the i-gel and the self-pressurized air-Q intubating laryngeal airway (air-Q SP) in children undergoing general anesthesia. MethodsEighty children, 1-108months of age, 7-30kg of weight, and scheduled for elective surgery in which supraglottic airway devices would be suitable for airway management, were randomly assigned to either the i-gel or the air-Q SP. Oropharyngeal leak pressure and fiberoptic view were assessed three times as follows: after insertion and fixation of the device, 10min after initial assessment, and after completion of surgery. We also assessed insertion parameters and complications. ResultsInsertion of the i-gel was regarded as significantly easier compared to the air-Q SP (P=0.04). Compared to the air-Q SP group, the i-gel group had significantly higher oropharyngeal leak pressures at all measurement points and significantly lower frequencies of gastric insufflation at 10min after initial assessment and completion of surgery. The air-Q SP group had better fiberoptic views than the i-gel group at all measurement points. ConclusionOur results showed that the i-gel had easier insertion and better sealing function, and the air-Q SP provided improved fiberoptic views in children requiring general anesthesia.