From: Analgesic efficacy of postoperative bilateral, ultrasound-guided, posterior transversus abdominis plane block for laparoscopic colorectal cancer surgery: a randomized, prospective, controlled study
Group TAP (n = 40)
Group Control (n = 42)
P value
24 h after surgery
4 (3,4)
3(3,4)
0.002
48 h after surgery
4(4,4)
0.702
72 h after surgery
4(3,4)
0.551