Ultrasound-Guided Transmuscular Quadratus Lumborum Block Reduces Postoperative Pain Intensity in Patients Undergoing Total Hip Arthroplasty: A Randomized, Double-Blind, Placebo-Controlled Trial

Table 5

Side effects after surgery.

	Group QLB (n = 41)	Group Con (n = 42)	value
Nausea, n (%)	3 (7.3)	13 (31)	0.006
Vomiting, n (%)	3 (7.3)	11 (26.2)	0.022
Pruritus, n (%)	2 (4.9)	6 (14.3)	NS
Urinary retention	4 (9.8)	12 (28.6)	0.030
Respiratory depression	0 (0)	0 (0)	NS

n = number of patients. Group QLB = quadratus lumborum block; Group Con = control group; NS = not significant.