Outcomes of First- Versus Second-Generation Drug-Eluting Stent Implanted for Right Coronary Artery Ostial Narrowing.

Clinical outcome is generally poor when stents are implanted at right coronary artery ostial lesion (RCAos). We compared the clinical outcome between the first-generation drug-eluting stent (first DES) and second-generation drug-eluting stent (second DES) used for RCAos. Consecutive 88 patients who underwent percutaneous coronary interventions of de novo RCAos using the first DES (33 patients) or second DES (55 patients) were analyzed. The incidence of major adverse cardiac events (MACE) defined as the composite of cardiac death, myocardial infarction attributed to right coronary artery, and target lesion revascularization within 2.5 years was compared. The incidence of MACE was significantly lower in second DES (11% vs 36%, p = 0.010) than that in the first DES. Multivariate analysis revealed use of second DES (odds ratio 0.24, 95% CI 0.11 to 0.93, p = 0.008) alone was significantly associated with MACE. In conclusion, second DES revealed better clinical outcome than the first DES when used in de novo RCAos.