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BACKGROUND Heart failure is a major public health problem. Long-term trends in the incidence of heart failure and survival after its onset in the community have not been characterized. METHODS We used statistical models to assess temporal trends in the incidence of heart failure and Cox proportional-hazards regression to evaluate survival after the onset(More)
OBJECTIVES We sought to create contemporary models for predicting mortality risk following percutaneous coronary intervention (PCI). BACKGROUND There is a need to identify PCI risk factors and accurately quantify procedural risks to facilitate comparative effectiveness research, provider comparisons, and informed patient decision making. METHODS Data(More)
OBJECTIVES The National Cardiovascular Data Registry (NCDR) developed the Data Quality Program to meet the objectives of ensuring the completeness, consistency, and accuracy of data submitted to the observational clinical registries. The Data Quality Program consists of 3 main components: 1) a data quality report; 2) a set of internal quality assurance(More)
BACKGROUND Stent thrombosis (ST) is a rare but devastating complication of coronary stent implantation, occurring in 0.5% to 1.9% of patients with bare metal stents. The incidence of ST with drug-eluting stents is less well studied, particularly among patients outside of clinical trials. METHODS AND RESULTS The aim of this study was to evaluate the(More)
BACKGROUND Postpacing precordial T-wave inversion (TWI), known as cardiac memory (CM), mimics ischemic precordial TWI, and there are no established ECG criteria that adequately distinguish between the two. On the basis of CM properties (postpacing sinus rhythm T vector approaching the direction of the paced QRS vector), we hypothesized that CM induced by(More)
BACKGROUND Temporal trends and contemporary data characterizing the impact of patient age on in-hospital outcomes of percutaneous coronary interventions are lacking. We sought to determine the importance of age by assessing the in-hospital mortality of stratified age groups in the National Cardiovascular Data Registry. METHODS AND RESULTS In-hospital(More)
BACKGROUND Definitions of stent thrombosis that have been used in clinical trials of drug-eluting stents have been restrictive and have not been used in a uniform manner. METHODS We applied a hierarchical classification of stent thrombosis set by the Academic Research Consortium (ARC) across randomized trials involving 878 patients treated with(More)
BACKGROUND After conventional treatment of in-stent restenosis, the incidence of recurrent clinical restenosis may approach 40%. We report the first multicenter, blinded, and randomized trial of intracoronary radiation with the use of a 90Sr/90Y beta-source for the treatment of in-stent restenosis. METHODS AND RESULTS After successful catheter-based(More)
OBJECTIVES We sought to evaluate clinical restenosis in a large population of patients who had undergone coronary stent placement. BACKGROUND One-year success after coronary stenting is limited mainly by restenosis of and requirement for repeat revascularization of the treated lesion. We studied 6,186 patients (6,219 lesions) pooled from several recently(More)
BACKGROUND In the first year after coronary stent implantation, clinical failures are driven mainly by procedural complications and restenosis, but the subsequent relative contributions of restenosis and disease progression to late failures are less clear. METHODS AND RESULTS We observed 1228 patients for 5 years after the implantation of stents as part(More)