Table 2 Comparison of secondary outcome measures of patients in the three treatment groups
Outcome measure | 20 ml 0.5% ropivacaine (n = 9) | 30 ml 0.33% ropivacaine (n = 10) | 40 ml 0.25% ropivacaine (n = 10) |
|---|---|---|---|
Total PCA morphine use (mg) | 65.9 (63) | 39.8 (25.2) | 43.2 (36.9) |
Time in PACU (min) | 138.4 (38) | 188.2 (54) | 154.6 (43) |
Satisfaction score | 4.3 (3.5) | 2.6 (2.5) | 1.8 (1.3) |
Pain score at rest (at 2 h) | 6.1 (2.4) | 5.3 (2.4) | 5.4 (2.3) |
Pain score with knee flexion (at 2 h) | 6.7 (2.1) | 5.0 (2.0) | 4.9 (2.2) |
PONV (at 2 h)a | 6 (66.7) | 3 (30.0) | 3 (30.0) |
Sedation (at 2 h)a | 6 (66.7) | 8 (80.0) | 7 (70.0) |