| Clinical Outcome Parameter |
Levobupivacaine
(Group 1A) |
Ropivacaine
(Group 2A) |
P value |
| Onset of surgical anesthesia (min) |
16.5 (1.2) |
19.2 (1.1) |
0.10 |
| Intraoperative fentanyl requirement (mcg) |
27.9 (10.5) |
44.4 (15.1) |
0.38 |
| Morphine requirement in PACU (mg) |
1.9 (0.9) |
1.8 (0.8) |
0.93 |
| Initial VAS pain score in PACU |
1.6 (0.7) |
1.9 (0.7) |
0.73 |
| Time from block placement to first request for oral pain medication (hrs) |
17.5 (2.0) |
17.7 (2.0) |
0.95 |
| Number of (oxycodone 5 mg/acetaminophen 325 mg) tablets used in first 48 hrs |
4.9 (0.6) |
3.8 (0.4) |
0.13 |
| Amount of time to absence of motor block (hrs) |
22 (1.6) |
21 (1.5) |
0.54 |
| Sensory block time (hrs) |
25 (1.7) |
22 (1.5) |
0.13 |
Patient satisfaction with postoperative analgesia
(1 = very dissatisfied, 10 = very satisfied) |
8.6 (0.2) |
8.7 (0.2) |
0.81 |
*Data = Mean (SEM). PACU, post-anesthesia care unit; VAS, visual analog scale