手术后使用的镇痛棒是什么东西？为什么用了就不痛了？什么原理？。
新斯的明加小剂量吗啡注入硬膜外用于术后镇痛的临床观察
1·As a result the patient of 97% achieves favorable demulcent result, all patients all did not appear serious complication.
结果97%的患者达到良好的镇痛效果，所有患者均未出现严重并发症。
2·What thing is the demulcent stick that uses after the operation? Why to use with respect to indolence? What principle?
手术后使用的镇痛棒是什么东西?为什么用了就不痛了?什么原理?。
3·Take demulcent drug for a long time, can leucocyte decrease?
长期服用镇痛药，白细胞会减少吗？
4·And have demulcent effect good, with dosage little, hematic drug chroma is maintained constant wait for an advantage.
并且具有镇痛效果好，用药量少，血药浓度维持恒定等优点。