Comparison of axial force and cell width of self-expandable metallic stents: which type of stent is better suited for hilar biliary strictures?
Comparison of axial force and cell width of self-expandable metallic stents: which type of stent is better suited for hilar biliary strictures?
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DOI：
10.1007/s00534-011-0406-5
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发表时间：
2011-09-01
影响因子：
3
通讯作者：
Moriwaki, Hisataka
中科院分区：
文献类型：
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作者：
Mukai, Tsuyoshi;Yasuda, Ichiro;Moriwaki, Hisataka
背景技术各种类型的自扩张金属支架（SEMS）是可商购的。然而，很少有报告比较各种 SEMS 的性能。除了长期通畅之外，初次放置时的可操作性以及支架闭塞再次干预的可行性也非常重要。方法在这项回顾性分析中，我们比较了 1999 年 6 月至 2008 年 11 月期间诊断为不可切除的肝门部胆管狭窄的 96 例患者的支架通畅持续时间和再次干预频率。 Kaplan-Meier 曲线显示，中等轴向力 (AF) 的 SEMS 的通畅持续时间明显短于其他低 AF 组的 SEMS。低 AF 和大细胞宽度的 SEMS 组比其他 SEMS 组更容易对 SEMS 闭塞进行内镜再干预。结论 就通畅持续时间和所需的再次干预频率而言，我们认为低 AF 和大细胞宽度的 SEMS 有利于治疗肝门部胆道狭窄。
Background Various types of self-expandable metallic stents (SEMSs) are commercially available. However, few reports have compared the performance of the various SEMSs. In addition to long-term patency, maneuverability during initial placement and feasibility of re-intervention for the stent occlusion are also very important.Methods In this retrospective analysis, we compared the duration of stent patency and frequency of re-interventions in 96 patients diagnosed with unresectable hilar biliary strictures in whom initial 10-mm SEMSs were inserted between June 1999 and November 2008.Results Based on Kaplan-Meier curves, significantly shorter patency duration was noted for SEMSs with moderate axial force (AF) than for other groups of SEMSs with low AF. Endoscopic re-interventions for SEMS occlusion were easier in a group of SEMSs with low AF and large cell width than in other groups of SEMSs.Conclusions With respect to patency duration and the frequency of re-intervention required, we consider that SEMSs with low AF and large cell width are favorable for hilar biliary strictures.