[Comparison of effects between China made sirolimus-eluting stents and bare stents for treating patients with acute myocardial infarction].

Objective: To compare the clinical outcomes between China made sirolimus-eluting stents (SES) and bare metal stents (BMS) implantation in patients with acute myocardial infarction (AMI).

Methods: Consecutive patients with AMI underwent primary percutaneous coronary intervention (PCI) were randomly divided into SES group (n = 87) and BMS group (n = 86). The incidence of major adverse cardiac events (MACE including death, reinfarction, in-stent thrombosis, restenosis rate, target vessel revascularization) up to 6 months post PCI were assessed.

Results: Postprocedure vessel patency, enzymatic release, cardiac function, and the incidence of short-term MACE were similar between the two groups (all P > 0.05). Two in-stent thrombosis was diagnosed in the SES group and bare stents group respectively (2.4% vs. 2.3%, P > 0.05). At 6 months, In-stent restenosis rate (4.5% vs. 40.0%, P < 0.01) and the in-segment restenosis rate (6.8% vs. 44.9%, P < 0.01) as well as MACE (8.0% vs. 24.4%, P < 0.01), which is mainly due to a marked reduction in the risk of target vessel revascularization (3.4% vs. 11.6%, P < 0.05) were significantly lower in SES group compared to BMS group.

Conclusion: The China made SES were not associated with an increased risk of in-stent thrombosis but significantly reduced restenosis rate and MACE at 6 months post primary angioplasty in patients with AMI.