Fig. 3.
Rat sciatic nerve blockade by 0.5% ropivacaine combined with 0%, 1.25%, 2.5%, or 5% MgSO4 (n = 8/group). Time courses of block (A), (C), and (E), CBT and CRT (B), (D), and (F), as outlined in figure 1. Data are presented as mean ± SEM. * P < 0.004 (ropivacaine alone vs. ropivacaine with MgSO4 added).