JACC. Cardiovascular interventions
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JACC Cardiovasc Interv · Oct 2008
Randomized Controlled Trial Comparative StudyPredictors of outcome and the lack of effect of percutaneous coronary intervention across the risk strata in patients with persistent total occlusion after myocardial infarction: Results from the OAT (Occluded Artery Trial) study.
This study sought to determine predictors of outcome and examine the influence of baseline risk on therapeutic impact of late mechanical opening of a persistently occluded infarct related artery after myocardial infarction in stable patients. ⋯ In the OAT study, there was no variation in the effect of PCI on clinical outcomes at different levels of patient risk, including the subset with very high event rates. (Occluded Artery Trial [OAT]; NCT00004562)
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JACC Cardiovasc Interv · Oct 2008
Multicenter Study Comparative StudyStent thrombosis, clinical events, and influence of prolonged clopidogrel use after placement of drug-eluting stent data from an observational cohort study of drug-eluting versus bare-metal stents.
The purpose of this study was to evaluate the risk of stent thrombosis (ST), clinical outcomes, and the benefits of extended clopidogrel use after drug-eluting stent (DES) implantation. ⋯ As compared with BMS, DES showed a similar risk of overall ST, but a higher risk of very late ST. The rates of death, death/myocardial infarction, and target lesion revasuclarization were significantly lower in the DES group. Clopidogrel continuation beyond 1 year did not appear to reduce ST and clinical events after DES implantation.
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JACC Cardiovasc Interv · Oct 2008
Effect of septal ablation on myocardial relaxation and left atrial pressure in hypertrophic cardiomyopathy an invasive hemodynamic study.
The objective of this study was to examine the effects of septal ablation on diastolic function with the use of invasive hemodynamics. ⋯ Septal ablation results in variable effects on left ventricular filling pressure, which are dependent upon the magnitude of reduction in the LVOT gradient. These effects are mediated in part by effects of ablation on myocardial relaxation. These findings shed insight into the pathophysiologic effects of septal reduction therapy in patients with HCM.
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JACC Cardiovasc Interv · Aug 2008
Randomized Controlled Trial Multicenter StudyUtility of cardiac biomarkers in predicting infarct size, left ventricular function, and clinical outcome after primary percutaneous coronary intervention for ST-segment elevation myocardial infarction.
We sought to determine the best cardiac biomarker to predict infarct size, left ventricular ejection fraction (LVEF), and clinical outcome in patients undergoing primary percutaneous coronary intervention (PCI) for ST-segment elevation myocardial infarction (STEMI). ⋯ Assessing TnI72h after primary PCI is a simple, effective method to estimate infarct size, LVEF, and potentially useful for risk stratification.