Effects of materials and types of biliary tract stents on implantation effectiveness: Enhancing patency rate and prolonging patency time
10.3969/j.issn.1673-8225.2010.16.035
- VernacularTitle:胆管支架材料及类型对置入效果的影响:改善开通率和延长开通时间
- Author:
Xiaojun ZHAO
- Publication Type:Journal Article
- From:
Chinese Journal of Tissue Engineering Research
2010;14(16):2991-2994
- CountryChina
- Language:Chinese
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Abstract:
BACKGROUND:Biliary tract stents comprise two types:expanding metallic stents and plastic stents,the patency time of the former is shorter than the latter,but the cost is higher.Thus,it is dispute which kinds of stent should be selected.Accordingly,it becomes a research topic how to improve patency rate and prolong patency time using cheap stents.OBJECTIVE:To explain the progress of biliary tract stents and to explore the effects of materials and types of biliary tract stents on patency rates and patency times.METHODS:The Chinese Journal Full-text Database and Medline were retrieved by the first author using search terms of "biliary stent,metallic stent,plastic stent,occlusion and stricture" both in Chinese and English.Meta analysis or repetitive studies were excluded.After that,20 documents concerning the effects of materials and types of biliary tract stents on patency rates and patency times were analyzed.RESULTS AND CONCLUSION:Biliary stent implantation is the preferred way for alleviative treatment of malignant obstruction of bile duct with few complications.Biliary tract stents comprise two types comprise metallic stents and plastic stents,the biocompatibility of both stents need to be improved.The metallic stents exhibited advantages in preventing bacteria,maintaining stent patency and reducing complications,but the high cost limited its application.Though plastic stents easily lead to stent occlusion due to bacteria adhesion and biliary siltation,however,it has merits of easy change and cheap cost.The combination of biliary stent implantation and radiotherapy can prolong effective patency period and prevent stent occlusion.The results demonstrated that biliary stent implantation is best methods for treating malignant obstruction of bile duct,and combined biliary stent implantation with radiotherapy can prevent stent obstruction.
