Sirolimus-Eluting Stents Versus Bare-Metal Stents in Patients With ST-Segment Elevation Myocardial Infarction: 9-Month Angiographic and Intravascular Ultrasound Results and 12-Month Clinical Outcome

Results In-segment LLL was 0.68 0.57 mm in the BMS group and 0.12 0.43 mm in the SES group with a mean difference of 0.56 mm, 95% confidence interval 0.43 to 0.68 mm (p 0.001). Late stent malapposition at 9 months was present in 12.5% BMS patients and in 37.5% SES patients (p 0.001). Event-free survival at 12 months was 73.6% in BMS patients and 86.0% in SES patients (p 0.01). The target-vessel-failure-free survival was 84.7% in the BMS group and 93.0% in the SES group (p 0.02), mainly because of a higher target lesion revascularization rate in BMS patients (11.3% vs. 3.2%; p 0.006). Rates of death, myocardial infarction, and stent thrombosis were not different.