Differences in SOV caliber before and after intubation
| Cohort (No.) | SOV | Mean (SD) | Mean Difference (99% CI) | P Value | |
|---|---|---|---|---|---|
| Intubated | Extubated | ||||
| Intraoperative (45) | Right | 3.56 (1.51) | 1.82 (0.66) | 1.74 (1.31–2.17) | <.001a |
| Left | 2.91 (1.41) | 1.53 (0.54) | 1.36 (0.95–1.79) | <.001 | |
| Trauma (70) | Right | 2.88 (1.48) | 1.86 (1.16) | 1.02 (0.74–1.30) | <.001 |
| Left | 2.68 (1.59) | 1.78 (1.11) | 0.90 (0.5–1.21) | <.001 | |
| Control (30) | Right | – | 1.88 (0.51) | – | ≤.001b |
| Left | – | 1.83 (0.49) | – | <.001 | |
↵a Bonferroni-corrected Wilcoxon paired signed rank tests between intubated and extubated states.
↵b Three-way Kruskal-Wallis test between controls and intubated cohorts. Post hoc pair-wise comparisons between controls and the experimental groups were also statistically significant (P < .001). Comparisons with extubated patients were not statistically significant.