Ultrasound-guided quadratus lumborum block for postoperative pain control in patients undergoing unilateral inguinal hernia repair, a comparative study between two approaches

Table 2 Block characteristics

Variable	QLB – 2 Group N = 20	QLB – 3 Group N = 20	P values
Duration of technique (min)	9.8 + 1.5	10.0 + 1.4	0.646
Duration of block (time of first analgesic request. (hr)	12.0 + 4.8^a	20.1 + 6.2^a	< 0.001
Block success rate. N (%)	20 (100%)	20 (100%)
Total opioid consumption over 24 h (mg)	1.9 + 0.6^a	1.1 + 0.9^a	0.001

Data are expressed as mean + SD or percentage. ^ameans statistically significant

ISSN: 1471-2253