Fig. 4From: The effect of systemic lidocaine on post-operative opioid consumption in ambulatory surgical patients: a meta-analysis of randomized controlled trialsMeta-analysis evaluating the effect of intraoperative intravenous lidocaine on time to hospital discharge readiness compared to control after ambulatory surgery. The overall effect of systemic lidocaine versus control was estimated as a random effect. The point estimate (95% confidence interval) for the overall effect was − 6.08 (− 31.73 to 19.57) (P = 0.64) minutesBack to article page