Fig. 2From: Comparison of plasma levobupivacaine concentrations with and without epinephrine following erector spinae plane block for breast cancer surgery: a randomized controlled trialMean time–concentration profile of plasma levobupivacaine. Data are expressed as mean ± SD. *p < 0.05. L, levobupivacaine; LE, levobupivacaine + epinephrineBack to article page