氯胺酮是一种强效静脉全身麻醉剂,具有诱导快、镇痛效果确切、使用方便等优点,主要抑制脑-新皮层系统和大脑的联络径路,引起意识模糊、短暂性记忆缺失,达到满意的麻醉止痛效果。在癌症疼痛治疗中,止痛药均需长期(≥3个月)使用,口服用药吸收慢,作用缓和,持续时间长,副反应少,便于病人自己掌握。伹 Ketamine is a potent intravenous general anesthetic with the advantages of fast induction, exact analgesic effect and easy to use. It mainly inhibits the connection between the brain-neocortex system and the brain, causing ambiguity and transient memory loss to achieve satisfactory anesthesia Analgesic effect. In the treatment of cancer pain, painkillers require long-term (≥3 months) use, oral medication slow absorption, the role of mitigation, long duration, fewer side effects, to facilitate the patient’s own grasp.伹