Figure 6.

End-tidal sevoflurane concentration (A) and cumulative sevoflurane consumption (B) in patients receiving dexmedetomidine or saline.

Data are expressed as the mean ± standard error of the mean and were analyzed by two-way analysis of variance and the independent-sample t-test. NS group (n = 52): Sevoflurane anesthesia with normal saline; DS group (n = 54): sevoflurane anesthesia with dexmedetomidine. T2: Immediately after I-gel laryngeal mask airway placement; T3: immediately after femoral artery intubation; T4: end of operation.