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Background  Clinical outcomes of new-generation drug-eluting stents (DES), Everolimus-eluting stent (EES) or Resolute zotarolimus-eluting stent (R-ZES), have been reported. However, angiographic follow-up data of new-generation DES are limited, especially in Asians. We investigated the angiographic and clinical outcomes of EES and R-ZES in a real-world setting of Korean patients.    Methods  Angiographic and clinical outcomes of 679 patients (866 lesions) who had been treated with EES or R-ZES from Jun 2008 to May 2010 were evaluated. The primary analysis was to compare in-segment late loss at 9 months and the secondary analyses were to compare the clinical outcomes.    Results  In-segment late loss at 9-month follow-up angiography was 0.23 ± 0.52 mm for EES and 0.29 ± 0.64 mm for R-ZES (p = 0.248). In addition, the rate of binary restenosis did not show between-group differences (5.8%  vs.  6.8% for EES and R-ZES, respectively, p = 0.716). During a median follow-up of 33 months, there were no significant differences in Kaplan-Meier estimates of target lesion failure (TLF) (7.5% vs. 7.9% for EES and R-ZES, respectively, p = 0.578) and patient-oriented composite outcomes (POCO including all-cause death, any myocardial infarction, and any revascularization, 22.8% vs. 20.1%, p = 0.888). The adjusted hazard ratios for TLF and POCO were 0.875 (95% CI 0.427 - 1.793; p = 0.715) and 1.029 (95% CI 0.642 - 1.650; p = 0.904), respectively, for EES over R-ZES in the propensity score matched group analysis.    Conclusions  In Korean patients undergoing new-generation DES implantation for coronary artery disease, EES and R-ZES showed similar angiographic outcomes at 9 months and comparable clinical outcomes during 2.8 years of median follow-up.

bmc cardiovascular disorders

Comparison of 9-month angiographic outcomes of Resolute zotarolimus-eluting and everolimus-eluting stents in a real world setting of coronary intervention in Korea