Objective: to determine the effects of continuous lumbar plexus block on postoperative pain after total knee replacement (TKR) surgery, and compare with the effects of epidural block.

目的：观察连续腰大肌间沟阻滞用于全膝关节置换术后镇痛的疗效，并与硬膜外镇痛进行对比研究。

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Objective:To discuss the advantages of single dose epidural block in Anesthesia.

目的探讨单次硬膜外阻滞在小儿麻醉中的优越性。

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Objective: To assess the practicability of epidural block combined with complex general anesthesia applying low dose and concentration of drug for high-risk aged patients.

目的：评价小剂量低浓度硬膜外阻滞复合全麻应用于老年高危病人手术的可行性。

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