Table 2 Anesthetic and Analgesic Outcomes of Both Groups
End-hole n = 36 | Six-hole n = 36 | P value | |
|---|---|---|---|
PRIMARY OUTCOME | |||
Ropivacaine volume at 24 h (mL) | 178 (150–210) | 173 (150–195) | 0.478 |
SECONDARY OUTCOMES | |||
Ropivacaine volume at 48 h (mL) | 387 (323–466) | 365 (295–418) | 0.452 |
Ropivacaine boluses at 24 h | 4 (2–8) | 4 (2–7) | 0.832 |
Ropivacaine boluses at 48 h | 5 (3–9) | 7 (1–10) | 0.768 |
Time of catheter placement (min) | 20 (12–20) | 15 (12–20) | 0.751 |
Quadriceps strength at 24 h (%) | 10 (0–28) | 7 (0–20) | 0.733 |
Quadriceps strength at 48 h (%) | 31 (3–45) | 16 (10–30) | 0.394 |
Morphine consumption at 24 h (mg) | 0 (0–20) | 0 (0–20) | 0.749 |
Morphine consumption at 48 h (mg) | 20 (0–40) | 20 (0–40) | 0.785 |
No rescue morphine at 24 h | 20 | 20 | 1 |
No rescue morphine at 48 h | 10 | 13 | 0.614 |
Catheter visualization | 9 (8–10) | 7 (3–8) | 0.001 |
Median of average NRS at 0 h (time zero) | 0 (0–5) | 0 (0–5) | 0.797 |
Median of average NRS at 24 h | 2 (0–4) | 2 (0–3) | 0.486 |
Median of maximum NRS at 24 h | 4 (2–6) | 4 (2–5) | 0.219 |
Median of average NRS at 48 h | 3 (1–4) | 2 (0–3) | 0.307 |
Median of maximum NRS at 48 h | 4 (2–6) | 4 (2–5) | 0.232 |
Satisfaction score | 9 (8–10) | 9 (8–10) | 0.808 |