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患女，52岁，被省级医院确诊为中期贵门癌。因疼痛就诊干乡村医院。遵医嘱im芬太尼0．Inlg，镇痛效果很好。之后每痛即用芬太尼，用量逐渐增大，用药间隔时间逐渐缩短，由原来的bid逐渐增加到每日6～8次，最大剂量每日达2～3mg，仍不能满足病人需要。此病人使用芬太尼达4个月之
Women, 52 years old, was diagnosed by the provincial hospital for the mid-term expensive door cancer. Due to the pain dry village hospital. As prescribed by fentanyl. Inlg, analgesic effect is good. After each pain with fentanyl, the dosage gradually increased, the medication interval gradually reduced from the original bid gradually increased to 6 to 8 times daily, the maximum daily dose of 2 ~ 3mg, still can not meet the needs of patients. This patient used fentanyl for 4 months