Fig. 3. Comparison of changes in heart rate between dexmedetomidine group and remifentanil group. T0: before induction, T1: before intubation, T2: after intubation, T3: after local injection, T4: 5 min after local injection, T5: 10 min after local injection, T6: 20 min after local injection, T7: 5 min before end of operation, T8: end of operation, T9: extubation, T10: admission to the PACU.
