Figure 2From: Sciatic lateral popliteal block with clonidine alone or clonidine plus 0.2% ropivacaine: effect on the intra-and postoperative analgesia for lower extremity surgery in children: a randomized prospective controlled study Kaplan-Meier analysis. Estimation of survival analysis of the time from the end of anesthesia to the first analgesic request in the Control, Clonidine and Clonidine plus 0.2% Ropivacaine groups.Back to article page