• Int J Cardiovasc Imaging · Dec 2015

    Randomized Controlled Trial Multicenter Study Comparative Study

    Comparison of long-term in-stent vascular response between abluminal groove-filled biodegradable polymer sirolimus-eluting stent and durable polymer everolimus-eluting stent: 3-year OCT follow-up from the TARGET I trial.

    • Bo Xu, Yao-Jun Zhang, Zhong-Wei Sun, Shu-Bin Qiao, Shao-Liang Chen, Rui-Yan Zhang, Dao-Rong Pan, Si Pang, Qi Zhang, Liang Xu, Yue-Jin Yang, Martin B Leon, and Run-Lin Gao.
    • Fu Wai Hospital, National Center for Cardiovascular Diseases, No.167, Beilishi Road, Xicheng District, Beijing, 100037, China.
    • Int J Cardiovasc Imaging. 2015 Dec 1; 31 (8): 1489-96.

    AbstractThe study sought to compare long-term optical coherence tomography (OCT)-based in-stent vascular response between the abluminal groove-filled biodegradable polymer sirolimus-eluting stent (SES) and the durable polymer everolimus-eluting stent (EES) in the TARGET I trial. The TARGET I trial was a prospective, multicenter, randomized clinical trial which enrolled 458 patients with single de novo lesions treated by abluminal groove-filled biodegradable polymer SES and EES. A subset of 43 patients underwent angiography and OCT examinations at 3 years. All OCT images were analyzed at 0.4 mm intervals. A similar increase in angiographic late lumen loss was observed in SES and EES (from 0.05 ± 0.05 vs. 0.05 ± 0.05 mm [p = 0.84] at 9 months to 0.25 ± 0.37 vs. 0.26 ± 0.19 mm [p = 0.99] at 3 years, respectively), without significant differences at 3 years in mean neointimal thickness of stent struts (SES: 0.13 ± 0.02 mm vs. EES: 0.13 ± 0.02 mm, p = 0.80); mean percentage of covered struts (SES: 99.2 % vs. EES: 99.3 %, p = 0.53), or malapposed strut rates (SES: 0.08 % vs. EES: 0.06 %, p = 0.15). The OCT-based in-stent vascular response evaluation found similar vascular healing for the two studied devices, indicating that the luminal loss in EES from 9 months to 3 years cannot be imputed on its coated biocompatible polymer.

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