CMAC® Versus Airtraq® and Macintosh Laryngoscope in Difficult Tracheal Intubation.
It is essential that anaesthetists successfully perform orotracheal intubation in scenarios in which intubation is potentially more difficult, such as where anatomical characteristics predictive of difficult intubation are present.
The CMAC® Laryngoscope is a new intubating device. It is designed to provide a view of the glottis without alignment of the oral, pharyngeal and tracheal axes.
The CMAC may be especially effective in situations where intubation of the trachea is potentially difficult.
The efficacy of this device in comparison to the traditional Macintosh laryngoscope and other novel laryngoscopes is not known.
We aim to compare its performance to that of the Macintosh laryngoscope, the gold standard device, in patients with one or more anatomical characteristics predictive of difficult intubation.
The investigators further aim to compare it to the Airtraq® device a device which has been shown to be superior to the Macintosh laryngoscope in previous trials.
The investigators primary hypothesis is that, in the hands of experienced anaesthetists, time to intubation would be shorter using the CMAC than using the Macintosh laryngoscope in patients with two or more anatomical characteristics predictive of difficult intubation.
The investigators further hypothesize that the Airtraq® will be superior the CMAC® with one or more anatomical characteristics predictive of difficult intubation.
|Airway Difficult Intubation Airway Device||Device: macintosh laryngoscope Device: C-MAC laryngoscope Device: Airtraq device|
|Study Design:||Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
|Official Title:||Comparison of the CMAC® Device to the Airtraq® and the Macintosh Laryngoscope in Patients With Anatomical Characteristics Predictive of Difficult Tracheal Intubation.|
- Rate of successful placement of Tube in the Trachea [ Time Frame: immediately ]
- 1. Duration of Intubation attempt (successful Attempts only) a. Absolute time taken to perform successful tracheal intubation b. Number of successful intubations completed within 30 seconds [ Time Frame: immediately ]
- 2. Tracheal Intubation attempts. a. Overall number of attempts at Intubation. b. Number of successful intubations on first attempt [ Time Frame: immediately ]
- 3. Laryngeal View Obtained c. Cormac and Lehane Grading of Best Laryngeal View d. Change in view compared to initial assessment by independent anaesthetist. e. POGO score. [ Time Frame: immediately ]
|Study Start Date:||January 2010|
|Study Completion Date:||March 2011|
|Primary Completion Date:||March 2011 (Final data collection date for primary outcome measure)|
|Active Comparator: macintosh||
Device: macintosh laryngoscope
intubate with the macintosh laryngoscope
|Active Comparator: C-MAC||
Device: C-MAC laryngoscope
intubate with the C-MAC laryngoscope
|Active Comparator: Airtraq||
Device: Airtraq device
intubate with the Airtraq device
Please refer to this study by its ClinicalTrials.gov identifier: NCT01031940
|Galway University Hospital|