Table 1.
Study outcomes by laryngoscope devices (n = 93)
| Outcome | Miller laryngoscope | UEScope videolaryngoscope | p value |
|---|---|---|---|
| Scenario A: normal airway without chest compressions | |||
| Success of intubation attempts [%] | |||
| 1st | 90 (96.8%) | 93 (100%) | NS |
| 2nd | 3 (3.2%) | – | |
| 3rd | – | – | |
| Overall intubation success rate [%] | 93 (100%) | 93 (100%) | NS |
| Time to endotracheal intubation [s] | 14 (12–19.5) | 13 (12.5–17) | 0.044 |
| Cormack and Lehane grade | |||
| 1 | 71 (76.3%) | 93 (100%) | 0.012 |
| 2 | 22 (24.6%) | – | |
| 3 | – | – | |
| 4 | – | – | |
| POGO score, 1–100 | 81 (75–93) | 87 (85–100) | 0.037 |
| Ease of use, 1–100 | 18 (15–22) | 15 (10–19) | 0.021 |
| Scenario B: difficult airway without chest compressions | |||
| Success of intubation attempts [%] | |||
| 1st | 45 (48.4%) | 81 (87.1%) | 0.001 |
| 2nd | 21 (22.6%) | 12 (12.9%) | |
| 3rd | 10 (10.7%) | – | |
| Overall intubation success rate [%] | 76 (81.7%) | 93 (100%) | 0.012 |
| Time to endotracheal intubation [s] | 27 (21–33) | 15 (14–21) | 0.001 |
| Cormack and Lehane grade | |||
| 1 | – | 51 (54.8%) | < 0.001 |
| 2 | 14 (15.1%) | 39 (42%) | |
| 3 | 68 (73.1%) | 3 (3.2%) | |
| 4 | 11 (11.8%) | – | |
| POGO score, 1–100 | 25 (23–33) | 80 (74–90) | < 0.001 |
| Ease of use, 1–100 | 74 (68–82) | 27 (16–35) | < 0.001 |
| Scenario C: normal airway with chest compressions | |||
| Success of intubation attempts [%] | |||
| 1st | 63 (67.7%) | 84 (90.3%) | 0.003 |
| 2nd | 20 (21.5%) | 9 (6.7%) | |
| 3rd | 2 (2.2%) | – | |
| Overall intubation success rate [%] | 85 (91.4%) | 93 (100%) | 0.018 |
| Time to endotracheal intubation [s] | 21 (18–28) | 15 (12–19.5) | 0.005 |
| Cormack and Lehane grade | |||
| 1 | 43 (46.2%) | 90 (96.8%) | 0.011 |
| 2 | 39 (41.9%) | 3 (3.2%) | |
| 3 | 10 (10.7%) | – | |
| 4 | – | – | |
| POGO score, 1–100 | 61 (50–72) | 81 (80–98) | < 0.001 |
| Ease of use, 1–100 | 39 (31–53) | 17 (14–23) | < 0.001 |
| Scenario D: difficult airway with chest compressions | |||
| Success of intubation attempts [%] | |||
| 1st | 27 (29.1%) | 67 (72%) | 0.001 |
| 2nd | 31 (33.3%) | 20 (21.5%) | |
| 3rd | 3 (3.2%) | 5 (5.4%) | |
| Overall intubation success rate [%] | 61 (65.6%) | 92 (98.9%) | < 0.001 |
| Time to endotracheal intubation [s] | 38 (23–46) | 21 (17–25.5) | 0.004 |
| Cormack and Lehane grade | |||
| 1 | – | 47 (50.5%) | < 0.001 |
| 2 | 7 (7.5%) | 37 (39.8%) | |
| 3 | 70 (75.3%) | 9 (9.7%) | |
| 4 | 16 (17.2%) | – | |
| POGO score, 1–100 | 21 (14–27) | 75 (68–89) | < 0.001 |
| Ease of use, 1–100 | 85 (77–92) | 30 (28–39) | < 0.001 |
NS not statistically significant, POGO percentage of glottis opening