Clinical outcomes after percutaneous peripheral intervention for chronic total occlusion of superficial femoral arteries: Comparison between self-expandable nitinol stent and stainless steel stent

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• 作者：Yuya Nakagawa ; Junji Yajima ; Yuji Oikawa ; Ken Ogasawara ; Hajime Kirigaya ; Kazuyuki Nagashima ; Ryuichi Funada ; Shunsuke Matsuno ; Toshiro Inaba ; Michinari Nakamura ; Hitoshi Sawada ; Tadanori Aizawa
• 关键词：Percutaneous peripheral intervention ; Self-expandable nitinol stent ; Stainless steel stent ; Chronic total occlusion of superficial femoral artery
• 刊名：Journal of Cardiology
• 出版年：2009
• 出版时间：June 2009
• 年：2009
• 卷：53
• 期：3
• 页码：417-421
• 全文大小：114 K

文摘

Summary

Background

It has been reported that nitinol stents provide higher patency in chronic phase than stainless steel stents after intervention to superficial femoral artery (SFA). However, there are few reports about stent patency for chronic total occlusion of SFA (SFA CTO).

Objective

To compare clinical outcomes of self-expanding nitinol stents and stainless steel stents after percutaneous peripheral intervention (PPI) for SFA CTO.

Methods and results

Between April 2004 and August 2007, a total of 25 SFA CTO lesions (nitinol stent group, 13; stainless steel stent group, 12) in 21 patients were treated with PPI, all patients were followed clinically, and 21 lesions (nitinol, 9; stainless steel, 12) received follow-up angiography. There was no significant difference in baseline characteristics, mean stent diameter (7.3 ± 0.7 mm vs. 6.9 ± 1.2 mm, p = 0.32), pre-ankle-brachial index (ABI), and Fontaine stage between groups. Mean occlusion length and stent length were significantly longer (129.5 ± 54.9 mm vs. 39.0 ± 20.6 mm, 250.8 ± 90.0 mm vs. 145.2 ± 64.6 mm, respectively, p < 0.01) and number of stents was significantly larger (2.8 ± 0.9 vs. 1.6 ± 0.5, p < 0.01) in the nitinol stent group. At follow-up, ABI was significantly lower (0.73 ± 0.20 vs. 0.95 ± 0.13, p = 0.04), restenosis rate and target lesion revascularization was significantly higher (58.3 % vs. 15.4 % , p = 0.03; 50.0 % vs. 7.7 % , p = 0.02, respectively) in the stainless steel stent group.

Conclusion

Our study demonstrates the superiority of nitinol stent implantation compared with stainless steel stent implantation for SFA CTO.