Imberti D, Prisco D
Thrombosis Center, Emergency Department, Hospital of Piacenza, Italy.
Thromb Res. 2008;122(4):442-9. doi: 10.1016/j.thromres.2007.06.017. Epub 2007 Sep 12.
Retrievable filters are a new generation of inferior vena cava (IVC) filters and represent an attractive option because they may be either left in place permanently or safely retrieved after a quite long period when they become unnecessary. In this review the currently available literature regarding retrievable IVC filters is summarized and their efficacy and safety is discussed. Moreover, the appropriate indications for their use are reviewed. Retrievable filters are becoming safer and easier to use; in fact the bioengineering research has optimized the technical characteristics of these devices, in order to reduce the incidence of possible complications. However, there are important unresolved issues, including the appropriate maximum implantation time, the possibility to safely and efficaciously remove the filters without being compromised by entrapped clots, and the use of anticoagulation during the implantation and periremoval periods. Large prospective cohort studies or randomized trials are strongly warranted to definitely clarify the beneficial role of these devices.
可回收滤器是新一代的下腔静脉（IVC）滤器，是一个有吸引力的选择，因为它们既可以永久留置，也可以在很长一段时间后不再需要时安全取出。在这篇综述中，总结了目前关于可回收IVC滤器的可用文献，并讨论了它们的有效性和安全性。此外，还回顾了其使用的适当指征。可回收滤器正变得更安全、更易于使用；事实上，生物工程研究已经优化了这些装置的技术特性，以降低可能并发症的发生率。然而，仍有一些重要的未解决问题，包括合适的最长植入时间、在不被血栓困住的情况下安全有效地取出滤器的可能性，以及在植入和取出期间使用抗凝药物的问题。强烈需要进行大型前瞻性队列研究或随机试验，以明确阐明这些装置的有益作用。
