Table 2.
Intubation time, intubation success rate, Cormack-Lehane grade, and subjective difficulty in the simulated difficult airway (tongue edema).
| Macintosh (n = 39) | McGRATH® MAC (n = 39) | C-MAC® (n = 39) | P value | |
|---|---|---|---|---|
| Intubation time (s) | ||||
| First attempt (s) | 28.9 (23.8–31.1) | 30.9 (26.3–35.4) | 32.7 (28.2–37.2) | 0.311 |
| Second attempt (s) | 31.7 (26.1–37.3) | 27.6 (23.1–32.2) | 30.5 (26.0–34.9) | 0.367 |
| Third attempt (s) | 30.8 (26.1–35.6) | 28.9 (24.8–33.2) | 28.2 (23.8–32.5) | 0.402 |
| Overall attempts (s) | 34.3 (29.3–39.3) | 31.7 (27.1–36.3) | 32.8 (28.1–37.5) | 0.354 |
| Success rate of intubation | ||||
| First attempt | 25 (64) | 35 (90)† | 36 (92)† | <0.001 |
| Second attempt | 22 (56) | 35 (90)† | 35 (90)† | <0.001 |
| Third attempt | 24 (62) | 37 (95)† | 36 (92)† | <0.001 |
| Overall attempts | 27 (69) | 38 (97)† | 37 (95)† | <0.001 |
| Number of intubation attempts, 1/2/3 | 25/2/0 | 35/1/2 | 35/1/1 | 0.663 |
| Cormack-Lehane grade, 1/2/3/4 | ||||
| First attempt | 2/17/5/15 | 9/29/1/0† | 7/30/0/2† | <0.001 |
| Second attempt | 2/20/4/13 | 9/28/1/1† | 6/30/2/1† | <0.001 |
| Third attempt | 2/20/4/13 | 11/28/0/0† | 9/28/0/2† | <0.001 |
| Subjective difficulty, VAS (0–10) | 7.8 (7.2–8.4) | 4.5 (3.9–5.1)† | 4.8 (4.2–5.4)† | <0.001 |
Data are presented as the median (interquartile range) or number (percentage). † P value <0.001 compared to the Macintosh blade.