Fig. 3From: Anterior Quadratus Lumborum block area comparison in the three different volumes of Ropivacaine: a double-blind, randomized controlled trial in healthy volunteersThe cutaneous sensory block areas are expressed as mean ± SD. After the cold test, significant differences were observed among the 20-, 30-, and 40-mL groups. Data is expressed as mean ± SD; *p < 0.05, **p < 0.01, ***p < 0.001Back to article page