[Long-term efficacy of sirolimus-eluting stents (Cypher) versus bare metal stents for patients with ST-segment elevation myocardial infarction].

Objective: To observe the safety and long-term efficacy of Cypher stent versus bare metal stents (BMS) in patients with STEMI.

Methods: From Dec 2002 to Mar 2005, clinical and angiographic data of 407 consecutive patients with STEMI treated with Cypher stent (n = 131) or BMS (n = 276) were analyzed and followed up for a mean period of 28.7 +/- 11.7 months. Major adverse cardiac events (MACE): death, nonfatal reinfarction and target lesion revascularization (TLR) during follow up was compared between two groups.

Results: Compared with the BMS group, diameter of vessels were significantly smaller (3.0mm vs. 3.2mm, P = 0.00), the incidence of MACE (6.1% vs. 12.7%, P = 0.04) and total mortality (1.5% vs. 6.9%, P = 0.02) were significantly lower in the Cypher group. The relative risk for MACE in Cypher group was 0.61 (P < 0.05), while there was no significant difference in the rate of stent thrombosis, rate of target lesion revascularization and restenosis.

Conclusion: Utilization of Cypher in the setting of primary PCI for STEMI was safe and improved the long-term clinical outcomes compared to BMS.