Table 3.
Number of intubation attempts and subjective assessment of handling with direct laryngoscopy (DL), C-MAC3, C-MAC4, and C-MAC4/SBT videolaryngoscopy.
| DL | C-MAC3 | C-MAC4 | C-MAC4/SBT | |
|---|---|---|---|---|
| (n = 150) | (n = 150) | (n = 50) | (n = 100) | |
| Number of intubation attempts | ||||
| 1 | 48/50 (96%) | 27/37 (73%) | 14/18 (78%) | 33/45 (73%) |
| 2 | 2/50 (4%) | 10/37 (27%) | 3/18 (17%) | 8/45 (18%) |
| 3 | 0* | 0 | 1/18 (5%) | 4/45 (9%) |
| Subjective assessment of handling (C/L < 3 with DL) | ||||
| very good | 85 (57%) | 62 (41%) | 12 (24%) | 39 (39%) |
| good | 49 (33%) | 63 (42%) | 34 (68%) | 39 (39%) |
| poor | 7 (5%) | 16 (11%) | 3 (6%) | 14 (14%) |
| Subjective assessment of handling (C/L≥3 with DL) | ||||
| very good | 0 (0%) | 2 (1%) | 0 (0%) | 2 (2%) |
| good | 5 (3%) | 4 (2%) | 1 (2%) | 4 (4%) |
| poor | 4 (2%) | 3 (2%) | 0 (0%) | 2 (2%) |
| Common concerns | ||||
| comfort | 6 (4%) | 16 (11%) | 2 (4%) | 16 (16%) |
| guidance of laryngoscope handle | 6 (4%) | 13 (9%) | 3 (6%) | 14 (14%) |
| blade insertion | 8 (5%) | 12 (8%) | 5 (10%) | 9 (9%) |
| glottic exposure | 26 (17%) | 27 (18%) | 8 (16%) | 21 (21%) |
Data are given as absolute numbers (percentage). DL: Direct laryngoscopy. *Six patients that were originally ought to be intubated by DL showed limited glottic visualisation (C/L≥ 3) and had to be intubated with the C-MAC4 and straight blade technique.