Fig. 7From: Effect of quadratus lumborum block on postoperative cognitive function in elderly patients undergoing laparoscopic radical gastrectomy: a randomized controlled trialSerum levels of IL-6 at different time points between the two groups. Error bars represent the mean ± SD, compared with group C, #P < 0.05, compared with baseline, *P < 0.05. Data were compared by repeated-measures analysis of variance. IL-6 = interleukin-6Back to article page