From: IPACK block with spinal anesthesia compared to fentanyl-based spinal anesthesia for postoperative analgesia following arthroscopic meniscectomy: a randomized, prospective study
Number of morphine boluses
Group F (n = 31)
Group I (n = 31)
P value
0 (n) (%)
9 (19.0%)
19 (61.3%)
0.038*
1 (n) (%)
7 (22.6%)
2 (n) (%)
4 (13.3%)
3 (n) (%)
6 (19.3%)
1 (3.22%)
4 (n) (%)
2 (6.45%)
0 (0.0%)