@article{oai:hirosaki.repo.nii.ac.jp:00003903,
 author = {Fukuda, Wakako and Chiyoya, Mari and Saito, Yoshiaki and Taniguchi, Satoshi and Daitoku, Kazuyuki and Fukuda, Ikuo},
 issue = {2-4},
 journal = {弘前医学},
 month = {Feb},
 note = {Background: Retrievable inferior vena cava （IVC） filter devices have been developed to overcome the
long-term complications of permanent filters. It is of interest to evaluate the retrievability of retrievable IVC filters
and how safely the IVC filters indwelled for a long period of time can be retrieved. We reviewed a group of 44
patients, who were selected for ALN retrievable filter implantation and reviewed the indications, efficacy as well as
complications.
Material and Methods: 300 venous thromboembolism （VTE） patients were treated in our institution between
2003 and 2014. IVC filters were inserted in 84 cases （28%） and 44 of 84 patients received ALN retrievable filter
implantation. We retrospectively reviewed the indications, efficacy and complications of 44 patients with ALN filters.
Results: All 44 patients had deep vein thrombosis（ DVT） and 39 patients（ 88.6%） also had pulmonary embolism（ PE）.
The most frequent associated risk factor for DVT was cancer（ n=19）. The filter was implanted for a median duration
of 708.8 days（ range 68-1717）. While the filter was in place, at least one venous thromboembolic event occurred in 4.5%
（2 of 44 patients）. Filter retrieval was attempted in 8 patients（ 18.2%） after a median period of 271.9 days（ range 79
- 559）. Filter retrievals were successful in all cases.
Conclusion: This study showed the efficacy of ALN filter. It also demonstrated the safety of retrieval after a longterm placement., 弘前医学. 67, 2017, p.158-165},
 pages = {158--165},
 title = {Aln Retrievable Vena Cava Filter - Efficacy, Safety and Retrievability -},
 volume = {67},
 year = {2017}
}