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

Table 1

Number of successful intubations.

Scenario^a	ML^b	AWS^b	𝑃 value
1	33 (9.1% [85.1–99.5])	34 (100% [89.9–100])	0.3165
2	33 (97.1% [85.1–99.5])	34 (100% [89.9–100])	0.3165
3	29 (85.3% [69.9–93.6])	34 (100% [89.9–100])	0.0309
4	1 (2.9% [5.2–14.92])	33 (97.1% [85.1–99.5])	<0.0001
5	14 (41.2% [26.4–57.8])	30 (88.2% [73.4–95.3])	0.0007
6	21 (61.8% [45.0–76.1])	34 (100% [89.9–100])	0.0004
7	32 (94.1% [80.9–98.4])	34 (100% [89.9–100])	0.1759

Data are shown as actual figures (%: proportion, [95% confidence intervals]).
^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.