Table 3 Pain score (FLACC score) and the amount of PCA at different time point after extubation
|  | Group R (n = 30) | Group S (n = 30) | P value |
|---|---|---|---|
The FLACC score at 1 h after extubation | 0.2 ± 0.5 | 0.2 ± 0.4 | 0.77 |
The FLACC score at 4 h after extubation | 1.1 ± 0.3 | 1.1 ± 0.2 | 0.57 |
The amount of PCA at 1 h after extubation (ug) | 0.4 ± 0.1 | 0.7 ± 0.1 | 0.02 |
The amount of PCA at 4 h after extubation (ug) | 2.0 ± 0.3 | 2.4 ± 0.4 | 0.04 |