Efficacy of SMART Stent Placement for Salvage Angioplasty in Hemodialysis Patients with Recurrent Vascular Access Stenosis.

Abstract

Vascular access stenosis is a major complication in hemodialysis patients. We prospectively observed 50 patients in whom 50 nitinol shape-memory alloy-recoverable technology (SMART) stents were used as salvage therapy for recurrent peripheral venous stenosis. Twenty-five stents each were deployed in native arteriovenous fistula (AVF) and synthetic arteriovenous polyurethane graft (AVG) cases. Vascular access patency rates were calculated by Kaplan-Meier analysis. The primary patency rates in AVF versus AVG at 3, 6, and 12 months were 80.3% versus 75.6%, 64.9% versus 28.3%, and 32.3% versus 18.9%, respectively. The secondary patency rates in AVF versus AVG at 3, 6, and 12 months were 88.5% versus 75.5%, 82.6% versus 61.8%, and 74.4% versus 61.8%, respectively. Although there were no statistically significant difference in patency between AVF and AVG, AVG showed poor tendency in primary and secondary patency. The usefulness of SMART stents was limited in a short period of time in hemodialysis patients with recurrent vascular access stenosis.

• Authors: Shingo Hatakeyama, Terumasa Toikawa, Akiko Okamoto, Hayato Yamamoto, Kengo Imanishi, Teppei Okamoto, Noriko Tokui, Yuichiro Suzuki, Naoki Sugiyama, Atsushi Imai, Yasuhiro Hashimoto, Shigemasa Kudo, Takahiro Yoneyama, Takuya Koie, Noritaka Kamimura, Hisao Saitoh, Tomihisa Funyu, Chikara Ohyama
• Journal: International journal of nephrology (Int J Nephrol) Vol. 2011 Pg. 464735 ( 2011) ISSN: 2090-2158 [Electronic] United States
• PMID: 22164331 (Publication Type: Journal Article)