Difference in Clinical Target Lesion Revascularization Between a Silicon Carbide-Coated and an Uncoated Thin Strut Bare-Metal Stent: The PRO-Vision Study

作者：Haine Steven E^*; Cornez Barbara M; Jacobs Jimmy M; Miljoen Hielko P; Vandendriessche Tom R; Claeys Marc J; Bosmans Johan M; Vrints Christiaan J

来源：Canadian Journal of Cardiology, 2013, 29(9): 1090-1096.

DOI：10.1016/j.cjca.2012.11.030

Background: Bare-metal stents trigger a foreign body reaction, resulting in neointima formation and restenosis. Silicon carbide (SiC) coating shields the metal from circulating blood and vessel wall, both potential sources of neointima smooth muscle cells. %26lt;br%26gt;Methods: We investigated whether SiC-coated stents (PRO-Kinetic) have lower clinical target lesion revascularization (TLR) rates than do uncoated bare-metal stents (Vision). Stents were implanted in 2731 patients during 2 consecutive 18-month periods. Clinical TLR was evaluated at 1 year. %26lt;br%26gt;Results: In the PRO-Kinetic group, TLR was significantly higher (9.0% vs 5.6%; unadjusted odds ratio, 1.61; 95% confidence interval [CI], 1.24-2.08; P %26lt; 0.001) compared with the Vision group. After adjustment for postintervention minimal luminal diameter (adjusted odds ratio [AOR], 0.56; 95% CI, 0.42-0.73), total implanted stent length (AOR, 1.01; 95% CI, 1.00-1.02), non-ST-segment elevation myocardial infarction or unstable angina at initial presentation (AOR, 1.89; 95% CI, 1.41-2.54), and triple vessel stenting (AOR, 2.68; 95% CI, 1.02-7.05), the use of PRO-Kinetic stents remained an independent predictor for revascularization (AOR, 1.57; 95% CI, 1.18-2.10; P = 0.002). Because strut thickness is lower in 2.0- to 3.0-mm PRO-Kinetic stents, a subgroup analysis (n = 2382 lesions) was performed. Even in this subgroup, PRO-Kinetic implantation proved an independent predictor of TLR (AOR, 1.62; 95% CI, 1.17-2.23; P = 0.003). %26lt;br%26gt;Conclusion: In contrast to theoretical expectations, the SiC-coated PRO-Kinetic stent was associated with greater target lesion revascularization rates at 1 year compared with the uncoated Vision stent.

• 出版日期2013-9