2016年5月1日
Optical coherence tomography study of chronic-phase vessel healing after implantation of bare metal and paclitaxel-eluting self-expanding nitinol stents in the superficial femoral artery
Journal of Cardiology
- 巻
- 67
- 号
- 5
- 開始ページ
- 424
- 終了ページ
- 429
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.jjcc.2015.06.011
- 出版者・発行元
- Japanese College of Cardiology (Nippon-Sinzobyo-Gakkai)
Background: This study aimed to assess chronic-phase suppression of neointimal proliferation and arterial healing following paclitaxel-coated (PTX) and bare metal stent (BMS) implantation in the superficial femoral artery using optical coherence tomography (OCT). Methods: Twenty-five patients with 68 stents underwent an 8-month OCT follow-up. Besides standard OCT variables, neointimal characterization and frequencies of peri-strut low-intensity area (PLIA), macrophage accumulation, and in-stent thrombi were evaluated. Results: The mean neointimal thickness was significantly less with PTX stents (544.9 ± 202.2 μm vs. 865.0 ± 230.6 μm, p <
0.0001). The covered and uncovered strut frequencies were significantly smaller and larger, respectively, in the PTX stent group vs. the BMS group (93.7% vs. 99.4%
p <
0.0001, 4.0% vs. 0.4%
p <
0.0001, respectively). Heterogeneous neointima was only observed in the PTX stent group (12.5% vs. 0%, p = 0.017). The frequencies of PLIA and macrophage accumulation were significantly greater in the PTX stent group (87.2% vs. 67.6%, p = 0.001 and 46% vs. 9.1%, p = 0.003, respectively). Conclusion: After 8 months, reduced neointimal proliferation was observed with PTX stent implantation. On the other hand, delayed arterial healing was observed compared with BMS.
0.0001). The covered and uncovered strut frequencies were significantly smaller and larger, respectively, in the PTX stent group vs. the BMS group (93.7% vs. 99.4%
p <
0.0001, 4.0% vs. 0.4%
p <
0.0001, respectively). Heterogeneous neointima was only observed in the PTX stent group (12.5% vs. 0%, p = 0.017). The frequencies of PLIA and macrophage accumulation were significantly greater in the PTX stent group (87.2% vs. 67.6%, p = 0.001 and 46% vs. 9.1%, p = 0.003, respectively). Conclusion: After 8 months, reduced neointimal proliferation was observed with PTX stent implantation. On the other hand, delayed arterial healing was observed compared with BMS.
- リンク情報
- ID情報
-
- DOI : 10.1016/j.jjcc.2015.06.011
- ISSN : 1876-4738
- ISSN : 0914-5087
- PubMed ID : 26347219
- SCOPUS ID : 84940862478