Research Article

Evaluation of Airway Scope at Improving the Success Rate of the First Intubation Attempt by Nonexpert Physicians: A Randomized Crossover Manikin Study

Table 2

Elapsed time to successful intubation (sec).

ScenarioaMLbAWSb value

112.3 [10.8–16.8]
(5.5–120.0)
12.0 [10.9–13.5]
(4.7–29.3)
0.1668
211.8 [10.0–16.0]
(6.8–120.0)
10.4 [8.91–11.6] (5.8–19.7) 0.0056
319.6 [17.0–39.0]
(8.7–120.0)
18.8 [14.2–21.7] (9.4–35.0)0.0625
4120.0c (18.0–120.0)29.1 [22.6–43.0] (1.1–120.0)<0.0001
5120.0c (11.5–120.0)23.0 [16.0–30.5] (1.0–120.0)<0.0001
627.2 [18.9–45.8] 
(8.9–120.0)
16.11 [13.4–20.2]
(8.0–37.5)
<0.0001
710.0 [8.3–12.2] 
(5.2–120.0)
7.5 [6.8–9.0]
(3.6–12.6)
0.0001

Data are median duration times, [95% confidence intervals] by Kaplan-Meier method and range (minimum–maximum).
aScenario: (1) Normal, (2) Head raised, (3) Cervical immobilization, (4) Tongue edema, (5) Pharyngeal obstruction, (6) Jaw trismus, (7) Repeated Normal.
bML: Macintosh laryngoscope, AWS: Airway Scope.
c95% CI were impossible calculated, median calculated by descriptive.