Statistical analysis was performed using SPSS (Statistical Package for Social Sciences) for Windows 21.0. Differences between the groups were analysed by using one-way analysis of variance (ANOVA) with the post-hoc Tukey analysis. The differences in ASA, gender and BRS between groups were analyzed by using Pearson chi-square test. Differences within groups in electrolyte and lactate levels, osmolarity and BRS were analyzed by repeated measures of ANOVA with the post-hoc Bonferroni correction test. Values of p ≤ 0.05 were considered statistically significant.