Figure 11. Serum aspartate aminotransferase (A) or alanine aminotransferase (B) concentrations before and after anesthesia. Shown are individual and mean values (+/- SD). The dotted line represents the upper limit of the reference range. There were 36, 36, and 27 sevoflurane patient samples and 35, 27, and 29 isoflurane patient samples before anesthesia and on days 1 and 3, respectively. There were no significant differences between sevoflurane and isoflurane groups using analysis of variance and chi-square analysis.