Purpose

To compare the Celect and Denali filters in terms of complex filter retrieval and indwelling complications after a 2-month indwelling time.

Materials and Methods

In this prospective, randomized trial, 153 subjects were assessed for eligibility between May 2016 and July 2018. A total of 136 participants were randomly assigned to receive either Celect (n = 68) or Denali (n = 68) filter placement in the infrarenal inferior vena cava. Tilt angles at placement and retrieval and rates of overall filter retrieval, indwelling complication, and complex retrieval were compared.

Results

Of 136 participants (mean age, 62 ± 12.8 years, 55 male), 24 (17.6%) were lost to follow-up. The mean indwelling time of filter was 60.4 ± 7 days and there was no significant difference in the baseline characteristics between the two groups. Filter retrieval was successful in all participants (112/112, 100%). Significantly higher rates of filter tilt > 15° (n = 8) and strut penetration (n = 14) were found with the Celect filter than with the Denali filter (1 significant tilt and 1 penetration) (P = 0.033 and 0.001, respectively). No filter fractures were observed and there was no significant difference in tip embedment, filter fracture, filter migration, or mean fluoroscopy times. There were 3 cases of complex retrieval (1 for Denali vs. 2 for Celect, P = 0.500), for which the loop-snare technique was used.

Conclusion

Denali filters demonstrated significantly lower rates of tilt angle > 15° and strut penetration. However, there was no significant difference in the complex filter retrieval rate between the Celect and Denali filters.

中文翻译：

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Celect 和 Denali 肾下腔静脉过滤器的可回收性和留置并发症的比较：一项随机对照试验

目的

在 2 个月的留置时间后，比较 Celect 和 Denali 过滤器的复杂过滤器检索和留置并发症。

材料和方法

在这项前瞻性随机试验中，153 名受试者在 2016 年 5 月至 2018 年 7 月期间接受了资格评估。共有 136 名参与者被随机分配接受 Celect ( n  = 68) 或 Denali ( n  = 68) 滤器放置在肾下下腔静脉。比较了放置和取出时的倾斜角以及整体过滤器取出率、留置并发症和复杂取出率。

结果

在 136 名参与者（平均年龄 62 ± 12.8 岁，55 名男性）中，24 名（17.6%）失访。过滤器的平均留置时间为 60.4 ± 7 天，两组的基线特征无显着差异。所有参与者的过滤器检索成功（112/112，100%）。Celect 过滤器的过滤器倾斜率 > 15° ( n  = 8) 和支柱穿透率 ( n  = 14) 明显高于 Denali 过滤器（1 个显着倾斜和 1 个穿透）（分别为P  = 0.033 和 0.001） . 没有观察到过滤器破裂，并且在尖端嵌入、过滤器破裂、过滤器迁移或平均透视时间方面没有显着差异。有 3 例复杂检索（Denali 1 例，Celect 2 例，P  = 0.500），为此使用了循环圈套技术。

结论

Denali 过滤器的倾角 > 15° 和支柱穿透率显着降低。但是，Celect 和 Denali 过滤器之间的复杂过滤器检索率没有显着差异。