A Randomized Comparison Simulating Face to Face Endotracheal Intubation of Pentax Airway Scope, C-MAC Video Laryngoscope, Glidescope Video Laryngoscope, and Macintosh Laryngoscope

Table 4

Success rate according to the number of attempts.

	MCL	AWS	GVL	CMAC
Success at 1st attempt	72 (83.7%)	71 (82.5%)	37 (43.0%)	74 (86.0%)
Success at 2nd attempt	13 (15.1%); (85, 98.8%)	13 (15.1%); (84, 97.6%)	25 (29.0%); (62, 72.0%)	9 (10.4%); (83, 96.5%)
Success at 3rd attempt	1 (1.1%); (86, 100%)	1 (1.1%); (85, 98.8%)	8 (9.3%); (70, 81.3%)	2 (2.3%); (85, 98.8%)
Success at 4th attempt	0	1 (1.1%); (86, 100%)	3 (3.4%); (73, 84.8%)	0
Failure at 4th attempt	0	0	13 (15.1%)	1 (1.1%)

MCL: Macintosh laryngoscope; AWS: Pentax airway scope; GVL: Glidescope video laryngoscope; C-MAC: C-MAC video laryngoscope.