In the difficult airway, the intubation times were similar among the three devices. The intubation time decreased significantly and by a similar amount to the McGRATH MAC and C-MAC compared to the Macintosh blade ( P < 0.001 and P = 0.017, resp.).
Each participant was asked to identify the device that was most useful. The intubation time, success rate of intubation, Cormack-Lehane grade at laryngoscopy, and difficulty using the device were recorded. The participants performed sequential intubations on the manikin in two simulated settings that included a normal airway and a difficult airway (tongue edema). Thirty-nine medical students who had used the Macintosh blade to intubate a manikin fewer than 3 times were recruited. We hypothesized that the McGRATH MAC would decrease the time of intubation compared to C-MAC for novices.
