Table 3.
Outcomes according to intubation device
| Variable | Total n = 958 |
Direct laryngoscopy n = 465 |
Video laryngoscopy n = 493 |
p |
|---|---|---|---|---|
| First-attempt success, n (%) | 664 (69.3) | 273 (58.7) | 391 (79.3) | < 0.001 |
| Difficult intubation*, n (%) | 294 (30.7) | 192 (41.3) | 102 (20.7) | < 0.001 |
| Cormack–Lehane grade†, n (%) | 0.024 | |||
| 1 | 721 (76.8) | 328 (72.6) | 393 (80.7) | |
| 2 | 170 (18.1) | 95 (21.0) | 75 (15.4) | |
| 3 | 38 (4.0) | 22 (4.9) | 16 (3.3) | |
| 4 | 10 (1.1) | 7 (1.5) | 3 (0.6) | |
| No. of intubation attempts | 1 [1, 2] | 1 [1, 2] | 1 [1, 1] | < 0.001 |
| Intubation duration‡ (min) | 4 [3, 6) | 4 [3, 7] | 4 [3, 5] | < 0.001 |
Values are expressed as median (interquartile range) or n (%)
* Defined as more than two attempts of intubation
†Reflects glottis visualisation, with a score range of 1 (good) to 4 (no glottis visualisation)
‡Defined as the time between the infusion of induction medication and confirmation of endotracheal tube placement by capnography or chest radiography