一项多中心随机前瞻性试验对比了鞘内给药与综合药物治疗。结果显示鞘内泵在以下方面有明显优点:总体毒性、疼痛缓解、疲劳及意识水平、生存率提高。 该研究指出有中到重度癌痛的患者应考虑使用鞘内泵[Smith TJ,Staats PS,Deer T et a1.Randomized clinical trial of an implantable drug de-livery system compared with comprehensive medical management for refractory cancer pain:impact on pain,drug-reated toxicity,and survival.J Cli.2002;20(19):4040-4049].