结论小剂量轻比重蛛网膜下腔-硬膜外联合麻醉对行下肢手术的老年骨折患者是一种疗效确切，安全可靠的麻醉方法。
Conclusion Small dose hypobaric spinal-epidural anesthesia for lower limb surgery in elderly patients with fracture is an effective and safe and reliable method of anesthesia.
目的探讨轻比重液腰硬联合麻醉用于老年患者下肢手术的有效性和安全性。
Objective To discuss the feasibility and safety of using specific gravity bupivacaine in combined spinal and epidural anesthesia in aged patients undergoing lower extremity surgery.
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