Comparison between groups
| Characteristic | Historic Control (n=30) | Neuraxial Anesthesia (n=42) |
|---|---|---|
| Age, months | 32 ± 29.6 (2.2–96) | 61.2 ± 35.7 (12–120) |
| Weight, kg | 13.7 ± 6.4 (3.6–35) | 21.0 ± 8.9 (10.3–41.1) |
| Surgical time, min | 42.1 ± 30.4 (12–94) | 66.0 ± 39.7 (12–242) |
| Morphine, MME/kg/24h | 36.9 ± 10.8 (10.5–126)1 | 0.6 ± 0.5 (0–1.9) |
1. Original IV morphine was 13.2 ± 3.6 (3.5–42). An oral MME conversion factor of 3 was used.