Table 2.

Comparison of EC50 Values of Gentamicin between Pre-treat Groups

Data are mean ± SEM. EC₅₀: effective concentration of 50% maximal effect, Mg: MgCl₂, Rv: ropivacaine, ST: single twitch, PTT: peak tetanic tension, ETT: end tetanic tension. ^*P < 0.05, vs. Mg 2 mM, Mg 4 mM, and Mg 2 mM + Rv 1 µM, ^†P < 0.05, vs. Mg 2 mM + Rv 0.5 µM, and ^‡P < 0.05, vs. Mg 2 mM + Rv 1 µM by t-test with Bonferroni's correction.