金属支架、内涵管置入术治疗恶性胆道梗阻的成本-效果分析(多中心研究)

目的 比较金属支架与塑料支架(内涵管)置入术治疗恶性胆道梗阻成本-效果比。方法 调查广东省三家医院95例实施经皮穿肝胆总管支架置入术的恶性胆道梗阻患者,其中61例置入自膨式金属支架(支架组),34例置入10F塑料内涵管(内涵管组)。所有患者均回访至死亡或至少术后1年。用Kaplan-Meier方法分析比较两组患者的生存及支架开通率,并计算两组的成本-效果比(Cost-effective rations,CER),即CER中位生存期=总成本／中位生存期,CER中位开通期=总成本／中位开能期。结果 两组总成本无差异,分别为53177±3139元和43564±4950(P<0．05)。支架组的CER中位生存期=237．4元／d、CER中位开通期=231．2元／d,低于内涵管组(分别为CE中位生存期=452．6元／d、CER中位开通期=472．9元／d。结论 金属支架置入术治疗恶性胆道梗阻的成本效果比优于内涵管。

The Cost-effectiveness Analysis of Percutaneous Transhepatic Metal Versus Plastic Biliary Stent Implantation for Treating Malignant Biliary Obstruction (Multiple Center Investigation)

Objective: To compare metal versus plastic biliary stent implantation for treatment of malignant biliary obstruction in cost-effectiveness ratio (CER). Methods: Percutaneous transhepatic self-expandable metal stent (MS, n=61) or 10F plastic stent (PS, n=34) implantation was performed in 95 patients with malignant biliary obstruction in three hospitals of Guangdong province. All patients were followed up until death or at least one year after the procedure. Kaplan-Meier analysis was used to compare the survival and stent patency rates of the patients in the two groups. CERs of two groups were calculated. The main indexes were CER_{survival period} (total cost/median survival period), CER_{patency period} (total cost/median patency period). Results: The total costs of treatment were 53177±3139 yuan (RMB) in MS group and 42564±4950 yuan (RMB) in PS group respectively (P>0.05). CER in MS group was superior to that in PS group (CER_{survival period} was 237.4 yuan /d vs 452.6 yuan /d, respectively; CER_{patency period} was 231.2 yuan /d vs 472.9 yuan /d, respectively). Conclusion: The metal stent implantation is superior to the plastic stent in the CER for treatment of malignant biliary obstruction.