4.2 Comparing intraoperative anesthetic and postoperative analgesic efficacy of bupivacaine and dexmedetomidine mixture with bupivacaine alone We find that the result of figure 3.1 when using bupivacaine combined with dexmedetomidine, improves anesthetic effect very well, excellent and very good level in BD group accounting for 94.4%, in good about 5.6% statistically significantly higher than B group, in turn 81.5% and 18.5%, p < 0.05.