View clinical trials related to Coronary Disease.
Filter by:Design: The proposed study is a randomized study comparing the relative effectiveness of three lesion modification strategies (RA, SBS, or OAS) in the treatment of obstructive CCLs using the change in lumen size measurements (MLA, RLA, MSA and the ratio of MSA/MLA) obtained with IVUS or OCT. Patients will be blinded to treatment assignment for the duration of the study. Treatment: Patients who are randomized to RA will undergo coronary wiring of the CCL and subsequent advancement of the RA burr. The RA system is performed using standard technique under intravenous infusion of heparin. The atherectomy burr size will be determined by the operator. Patients who are randomized to OAS will undergo coronary wiring of the CCL and subsequent advancement of the OAS according to the manufacturer's guidelines. Control: Patients who are randomized to SBS will undergo coronary wiring and balloon inflation with SBS performed by standard technique under intravenous infusion of heparin. SBS will be used according to the AngioSculpt manufacturer's guidelines. Duration: 30 days follow-up. The primary trial objective is to determine which of the three treatment strategies for treating calcified coronary lesions (RA, SBS, or OA) is superior for obtaining higher ratio of final in-stent minimum lumen area/reference lumen area, as determined by IVUS or OCT (primary study endpoint). The secondary objectives are to compare the following: 1. Difference in pre- vs. post-treatment minimum lumen area (MLA, lumen area gain), as determined by IVUS or OCT (secondary endpoint) 2. Mean final minimal stent area (MSA), as assessed by IVUS or OCT (secondary endpoint) 3. Ratio of final in-stent minimum lumen diameter/reference lumen diameter, as determined by quantitative coronary angiography (secondary endpoint) 4. Incidence of major adverse cardiac events (death, myocardial infarction, target vessel revascularization) during 30 days of follow-up (secondary endpoints) 5. Procedure time, fluoroscopy time, and contrast volume (secondary endpoints)
The purpose of this study is to evaluate the incidence of late incomplete stent apposition (ISA) and un-coverage by optical coherence tomography (OCT) following everolimus-eluting stent (EES) with bioabsorbable polymer (SYNERGY™, Boston Scientific,Nattick, MA, USA) versus zotarolimus-eluting stent (ZES) with permanent polymer(Resolute Onyx™, Medtronic, Santa Rosa, CA, USA) implantation in patients with AMI at 12 months.
The purpose of this study is to determine whether the expression level of miR-320a are effective as biomarker in evaluating the diagnosis, prognosis and treatment effects of coronary heart disease.
This research is being done to evaluate the short term and long term effects of ketogenic diets on measures of cardiovascular health. Such measures include cholesterol levels, blood pressure, weight, and thickening of the blood vessel wall over time. Adults aged 18 or older who are already on a ketogenic diet for at least 12 months or who are interested in beginning on the modified Atkins diet may join.
Coronary heart disease (CHD) has a serious health threaten to population. PCI is a well-proved measure in CHD management. However, the knowledge about the real-life PCI use and how evidence-based therapies in routine clinical practice is limited. By consecutively recruiting PCI patients in a large-scale hospital in in Northeast China,this study will examine various real-life factors, that may affect patients recovery after the procedure. Practical guidelines, appropriateness criteria and quality evaluative system for PCI will be established based on the findings, to improve patients outcomes in future finally.
The aim of this study is to investigate the potential novel risk factors for acute myocardial infarction. Predictors of poor outcomes will be also evaluated.
The purpose of this study is to develop new approaches for screening astronauts for cardiovascular risk during deep space missions.
The aim of this study is to determine the effects of omega 3 supplementation and its concurrent supplementation with vitamin E on the serum levels of antioxidant enzymes and the expressions of the PGC-1a, h TERT, FOXO1, FOXO3a , SIRT1,SIRT3, SIRT6 genes in PBMC cells in the patients with coronary artery disease
After having had a first cardiovascular event, there is a considerable risk of developing a subsequent event. Only recently, a risk prediction model was developed for this group of patients. Imaging techniques such as the coronary artery calcium score and contrast-enhanced computed tomography (CT) of the coronary and carotid arteries could be able to add improve this model. Imaging may further improve the prediction of future manifestations of arterial disease and personalize disease monitoring and treatment.
Background: Although selected cardiac surgery can be performed off-pump, the vast majority of cardiac surgical procedures today are performed with the support of cardiopulmonary bypass (CPB). Blood cardioplegia is used to protect the heart during aortic cross-clamping. However, negative effects of myocardial hypoxia during surgery are often aggravated by ischemia/reperfusion injury. In addition, cardiopulmonary bypass leads to an inflammatory response including endothelial cell activation. Comparable to the reperfusion injury following acute myocardial infarction resolved by percutaneous coronary intervention, the microcirculatory impairment observed after cardiac surgery may be caused by endothelin 1 (ET-1). ET-1 is a potent vasoconstrictor peptide upregulated in myocardial ischemia-reperfusion injury. Short-term administration of the selective ETA receptor blocker BQ-123 was found safe in a pilot study including patients with acute myocardial infarction. Hypothesis: Acute local ETA receptor blockade by intracoronary administered BQ-123 reduces myocardial injury. Methods: BQ-123 will be administered in patients undergoing on-pump aorto-coronary bypass grafting to the left anterior descending coronary artery with the use a left inner mammary artery graft and at least one vein graft. Subjects will be randomized to receive the endothelin-A receptor blocker BQ-123 or placebo administered intracoronarily in combination with cardioplegia in a double-blind manner. The primary endpoint will be enzymatic infarct size. Clinical perspective: The implementation of BQ-123 as an add-on pharmacologic therapy in cardiac surgery performed with the use of cardiopulmonary bypass could lead to improved tissue reperfusion and reduced ischemia/reperfusion injury, potentially impacting clinical long-term outcome.