Section Editor: Charles Cote
A randomized crossover comparison between the Laryngeal Mask Airway-Unique™ and the air-Q Intubating Laryngeal Airway in children*
Article first published online: 15 SEP 2011
© 2011 Blackwell Publishing Ltd
Volume 22, Issue 2, pages 161–167, February 2012
How to Cite
Jagannathan, N., Sohn, L. E., Mankoo, R., Langen, K. E. and Mandler, T. (2012), A randomized crossover comparison between the Laryngeal Mask Airway-Unique™ and the air-Q Intubating Laryngeal Airway in children. Pediatric Anesthesia, 22: 161–167. doi: 10.1111/j.1460-9592.2011.03703.x
Study registration: NCT01314248 can be found at http://clinicaltrials.gov. Disclaimers: The devices used in this study was provided by the manufacturers.
Air-Q Intubating Laryngeal Mask Package Insert. Available at: http://mercurymed.com/pdf/air-Q_dfu.pdf. Accessed May 29, 2011.
Laryngeal Mask Airway Package Insert. Available at: http://www.lmana.com/viewifu.php?ifu=15. Accessed May 29, 2011.
- Issue published online: 2 JAN 2012
- Article first published online: 15 SEP 2011
- Accepted 21 August 2011
- Laryngeal Mask Airway;
- airway devices;
- equipment air-Q;
- intubating laryngeal airway
Objectives: The purpose of this randomized crossover study was to evaluate the feasibility of the air-Q intubating laryngeal airway (ILA) in clinical practice when compared with the Laryngeal Mask Airway-Unique™ (LMA-U), the current standard of care for primary airway maintenance.
Aim: We hypothesized that the ILA would have better airway seal pressures and laryngeal alignment than the LMA-U in anesthetized nonparalyzed children.
Background: The ILA is a newer supraglottic airway for children with design features that allow it to be used for primary airway maintenance and as a conduit for tracheal intubations.
Methods: Fifty healthy children, 6–36 months of age, 10–15 kg, who were scheduled for elective surgery in which the use of a size two LMA-U and size 1.5 ILA would be appropriate for airway maintenance, were enrolled into this randomized crossover study. Primary outcome measures were airway leak pressures and fiberoptic grades of view. Secondary outcome measures included ease and time for successful insertion, incidence of gastric insufflation, ventilation parameters, and complications.
Results: There were no statistically significant differences in regard to the ease of device insertion, time to ventilation, gastric insufflation, and ventilation parameters between the ILA and the LMA-U. All devices were successfully placed on the first attempt, and there were no instances of failure. There were statistically significant differences in the airway leak pressure between the ILA (19.0 ± 5.4 cmH2O) and the LMA-U (16.1 ± 4.9 cmH2O), P = 0.001. There were also statistically significant differences in the fiberoptic grades of view between the ILA and LMA-U, P = 0.004.
Conclusions: The ILA had higher airway leak pressures and superior fiberoptic grades of view when compared with the LMA-U and can be a suitable alternative to the LMA-U in children weighing 10–15 kg.