epidura analgesia的用法和样例：
例句
- Relative Analgesic Potencies of Levobupivacaine and Ropivacaine for Epidural Analgesia in Labor Polley LS, et al.
左旋布比卡因和罗哌卡因在产科硬膜外镇痛中的相对镇痛强度。 - Could benefits of epidural analgesia following oesophagectomy be measured by perceived perioperative patient workload?
食道切除术后硬膜外镇痛的益处能否用围手术期监护患者的工作量衡量？
