Significance of noncalcified coronary plaque in asymptomatic subjects with low coronary artery calcium score: assessment with coronary computed tomography angiography.

We aimed to investigate the prevalence and severity of noncalcified coronary plaques (NCP) using coronary CT angiography (CCTA) and analyze predictors of significant coronary stenosis by NCP in asymptomatic subjects with low coronary artery calcium score (CACS). The institutional review board approved this retrospective study and all patients gave written, informed consent. The presence of plaque, severity of stenosis, plaque characteristics, and CACS were assessed in 7,515 asymptomatic subjects.

Clinical characteristics of coronary drug-eluting stent fracture: insights from a two-center des registry.

Stent fracture (SF) has been implicated as a risk factor for in-stent restenosis, but its incidence and clinical characteristics are not well established. Therefore we investigated the conditions associated with stent fracture and its clinical presentation and outcome. Between 2004 and 2007, consecutive cases of SF were collected from the Seoul National University Hospital.

Angiographic patterns of restenosis after percutaneous intervention of chronic total occlusive lesions with drug-eluting stents.

Background: Although the success rate of percutaneous coronary intervention (PCI) of chronic total occlusive (CTO) lesions is rising recently, the nature and behavior of these revascularized lesions in the real-world practice are unknown.

Methods: Data was collected from a prospective cohort of patients with successfully revascularized CTO lesions using drug-eluting stent (DES). Among these, patients with angiographical in-stent restenosis (ISR) were analyzed.

Sirolimus- vs. paclitaxel-eluting stents for the treatment of unprotected left main coronary artery stenosis: complete 2-year follow-up of a two-center registry.

Background: The feasibility of percutaneous coronary intervention (PCI) using drug-eluting stents and its comparability with bypass surgery in treatment of unprotected left main coronary artery (LMCA) stenosis has been shown previously. We compared the mid-to long-term outcome between sirolimus-(SES) vs. paclitaxel-eluting stents (PES) in an all-comer analysis that included all patients with unprotected LMCA stenosis who underwent PCI with SES or PES.

Long-term clinical outcome of chronic total occlusive lesions treated with drug-eluting stents: comparison of sirolimus-eluting and paclitaxel-eluting stents.

Background: There are few studies comparing the efficacy of different drug-eluting stents and their long-term clinical outcomes in percutaneous coronary intervention (PCI) of chronic total occlusive (CTO) lesions.

Methods And Results: To compare the efficacy of sirolimus-eluting stents (SES) and paclitaxel-eluting stents (PES) for CTO, and to identify predictors of outcome after PCI, 200 patients with at least 1 successfully revascularized CTO were enrolled into either a SES (n=132) or PES (n=71) group. At 6-9-month angiographic follow-up, SES was superior to PES (late loss 0.

One year clinical and six month angiographic results of drug eluting stents for ST elevation acute myocardial infarction: 'real world' comparison between sirolimus- and paclitaxel-eluting stents.

Background: Concerns about safety of drug eluting stents have stirred up controversy on their use in patients with acute STEMI. It is also unknown whether differences in efficacy and safety exist between sirolimus- (SES) and paclitaxel-eluting stents (PES).

Objective: To investigate the difference in angiographic results and clinical outcome between SES and PES in the treatment of acute STEMI, we analyzed "real world" 6 months angiographic and 1 year clinical outcome of 244 patients, comparing the results between SES and PES.