The use of combined anesthetic strategies, such as local anesthesia in the wound and epidural anesthesia in the spine, can have a synergistic effect that reduces the required anesthesia at each site.

• 采用联合麻醉剂策略如伤口局部麻醉和脊柱硬膜外麻醉可产生协同效应以降低各种方法的麻醉剂用量。