From: A comparison of airway management devices in simulated entrapment-trauma: a prospective manikin study
Mean
Median
SD
95% CI
LMA Supreme
16.7
16.0
4.5
14.9–18.6
Laryngeal tube
19.4
19.0
3.4
18.0–20.8
Macintosh
37.7
33.5
14.4
31.8–43.5
Airtraq
41.2
39.5
11.0
36.7–45.6