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Active clinical trials for "Coronary Disease"

Results 2591-2600 of 2755

The Success of Opening Concurrent CTO leSion to Improve Cardiac Function Trial in Patients With...

Chronic Total Occlusion of Coronary ArteryPercutaneous Coronary Intervention2 more

The purpose of this study is to investigate the effect of percutaneous coronary intervention (PCI) on cardiac function in multi-vessel disease patients with concurrent chronic total occlusion (CTO) lesion.

Unknown status2 enrollment criteria

Serum Oxidative Status as a Potential Predictor of Coronary Artery Disease.

Coronary Artery DiseaseParaoxanase 12 more

Coronary artery disease (CAD) is a major cause of death and disability in developed countries.Human studies revealed a significant association between serum oxidative status using PON1, TBARS and thiol levels and the presence of CAD and its severity. However, these studies were addressing the severity of CAD depending on coronary angiography of patients presenting with ST elevation myocardial infarction, Non ST elevation myocardial infarction, unstable angina pectoris, while part of them even had a history of CAD. Others where admitted for an elective coronary angiography for suspected stable CAD while only few patients were assessed for atypical chest pain. This study thus aims to assess the relationship between PON1 activity, TBARS and thiol levels and the existence of CAD and its severity in patients with no previous history of CAD presenting to the emergency department (ED) with acute chest pain but with no evidence of acute myocardial infarction or acute E.C.G ischemic changes. Assessment with a Cardiac CT scan instead of coronary angiography will allow the investigators to study the status of coronary atherosclerosis and calcium burden in all participants, including those presenting with atypical chest pain that most probably will not be referred by physicians to a coronary angiography. Further sub groups analysis will estimate this relationship particularly in low-intermediate risk groups depending on 3 different validated scoring systems - TIMI, GRACE and HEART score.

Unknown status11 enrollment criteria

Effect and Efficacy of Xpedition™/Alpine™, Everolimus-eluting Stent for Coronary Atherosclerosis...

Coronary Artery DiseasePercutaneous Coronary Intervention2 more

The objectives of this study are To establish a prospective registry of the whole patients who received percutaneous coronary intervention with Xience Xpedition™/Alpine™ stent To evaulate the long-term efficacy and safety of coronary stenting with the Xience Xpedition™/Alpine™ stent To compare the long-term efficacy and safety of coronary stenting between the Xience Xpedition™/Alpine ™ stent and other contemporary drug-eluting stents which had established their own registry

Unknown status3 enrollment criteria

Coronary Revascularization Assessed by Stress PET

Coronary StenosesMyocardial Ischemia3 more

Regional absolute myocardial blood flow during stress (sMBF) as measured by Positron Emission Tomography (PET) improves post mechanical revascularization provided there is a baseline stress induced perfusion defect. Coronary revascularization performed on regions without a stress induced perfusion defect does not increase the sMBF.

Unknown status7 enrollment criteria

Prediction of Progression of Coronary Artery Disease (CAD) Using Vascular Profiling of Shear Stress...

Coronary AtherosclerosisAcute Coronary Syndrome3 more

Although atherosclerosis is a systemic disease, its manifestations are focal and eccentric, and each coronary obstruction progresses, regresses, or remains quiescent in an independent manner. The focal and independent nature of atherosclerosis cannot be due solely to the presence of systemic risk factors such as hyperlipidemia, diabetes mellitus, cigarette smoking, and hypertension. Local factors that create a unique local environment are a major determinant of the behavior of atherosclerosis in a susceptible individual. The vascular endothelium is in a unique and pivotal position to respond to the extremely dynamic forces acting on the vessel wall due to the complex 3-D geometry of the artery. Mechanical forces in general, and fluid shear stress (endothelial shear stress [ESS]) in particular, elicit a large number of humoral, metabolic and structural responses in endothelial cells. Regions of disturbed flow, with low and oscillatory ESS (< 1.0 Pa), are intensely pro-atherogenic, pro-inflammatory, and pro-thrombotic, and correlate well with the localization of atherosclerotic lesions. These sites demonstrate intense accumulation of lipids, inflammatory cells, and matrix degrading enzymes which promote the formation of high-risk thin-cap fibroatheroma. In contrast, physiologic laminar flow (1.0-2.5 Pa) is generally vasoprotective. However, as the obstruction progresses and further limits blood flow through a narrowed lumen, flow velocity and ESS may increase excessively (> 2.5 Pa) at the neck, and decrease abnormally at the outlet, increasing the likelihood of platelet activation and thrombus formation. Identification of an early atherosclerotic plaque likely to progress and acquire characteristics leading to likelihood of rupture and, consequently, to precipitate an acute coronary event or rapid luminal obstruction, would permit more definitive pharmacologic or perhaps mechanical intervention prior to the occurrence of a cardiac event. The potential clinical value of identifying and "eradicating" plaques destined to become vulnerable before they actually become vulnerable is enormous. The purpose of the PREDICTION Trial is to identify high-risk coronary lesions at an early time point in their evolution, to follow the natural history of these lesions over a 6-10 month period, and to confirm that these high-risk lesions are likely to rupture and cause an acute coronary syndrome (ACS) or develop rapid progression of a flow-limiting obstruction. The hypothesis is that local segments in the coronary arteries with low ESS and excessive expansive remodeling will be the sites where atherosclerotic plaque develops, progresses, and becomes high-risk, leading to a new cardiac event. This study is being conducted in Japan as patients are clinically evaluated with followup coronary angiography and IVUS in a routine manner at 6-10 months following their initial percutaneous coronary intervention (PCI) for an ACS. This is a natural history and a clinical outcomes study in patients who initially present with an ACS. The natural history portion of the study is designed to describe the temporal progression of atherosclerosis in segments of coronary arteries with low ESS and expansive remodeling using intracoronary vascular profiling techniques utilizing intravascular ultrasound (IVUS) and coronary angiography. The clinical outcomes portion of the study is designed to evaluate the efficacy of coronary vascular profiling to predict segments of coronary arteries that will become areas of rapid plaque growth or rupture leading to recurrent major clinical coronary events. Five hundred (500) patients with acute coronary syndrome undergoing PCI for a culprit lesion are to be enrolled in the study to undergo coronary vascular profiling at the time of the index catheterization procedure. Up to 374 consecutive patients with at least one low ESS subsegment are to have follow-up coronary angiography and IVUS at 6-10 months to allow for at least 300 patients with analyzable intracoronary vascular profiling data for assessment of lesion natural history. All patients are to have a one-year clinical follow-up to assess for new cardiac events, followed by two additional years of extended clinical followup.

Unknown status14 enrollment criteria

Impact of Renal Function on Ticagrelor-Induced Antiplatelet Effects in Coronary Artery Disease Patients...

Coronary Artery Disease

Dual antiplatelet therapy consisting in aspirin and clopidogrel is the cornerstone of the treatment of the prevention of the thrombotic events in patients with coronary artery disease (CAD), showing a reduction in adverse events.

Unknown status18 enrollment criteria

Meta-analyses of Total and Individual Fructose-containing Sugars and Incident Cardiometabolic Disease...

OverweightObesity10 more

Since uncontrolled observational studies first linked fructose to the epidemic of obesity almost a decade ago, it has become a focus of intense concern regarding its role in the obesity epidemic and increasing burden of cardiometabolic disease. Despite the uncertainties in the evidence, international health organizations have cautioned against moderate to high intakes fructose-containing sugars, especially those from sugar sweetened beverages (SSBs). To improve the evidence on which nutrition recommendations are based, the investigators propose to study of the role of fructose-containing sugars in the development of overweight/obesity, diabetes, hypertension, gout, and cardiovascular disease, by undertaking a series of systematic syntheses of the available prospective cohort studies. Prospective cohort studies have the advantage of relating "real world" intakes of sugars to clinically meaningful disease endpoints over long durations of follow-up. The findings generated by this proposed knowledge synthesis will help improve the health of consumers through informing recommendations for the general public, as well as those at risk of diabetes and cardiovascular disease.

Unknown status6 enrollment criteria

Safety Study of Dengzhanxixin (a Chinese Medicine Injection) Used in Hospitals in China

Ischemic StrokeCoronary Heart Disease

This study was advocated by Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences in October 2011. It was funded by China major scientific and technological specialized project for 'significant new formulation of new drugs'. Dengzhanxixin is kind of Chinese Medicine injection used for treating Ischemic Stroke and coronary heart disease in many Chinese hospitals. The purpose of this study is to determine adverse drug events or adverse drug reaction in large sample size 30,000 patients.

Unknown status2 enrollment criteria

BIOTRONIK - BIOFLOW-III Registry French Satellite

Coronary Artery Diseases

For the majority of Coronary Artery Disease (CAD) treatment with Percutaneous Transluminal Coronary Angioplasty (PTCA) provides high initial procedure success. However, the medium to long-term complications range from rather immediate elastic coil or vessel contraction to longer processes like smooth muscle cell proliferation and excessive production of extra cellular matrix, thrombus formation and atherosclerotic changes like restenosis or angiographic re-narrowing. The reported incidence of restenosis after PTCA ranges from 30 to 50%. Such rates of recurrence have serious economic consequences. Bare Metal Stents (BMS), designed to address the limitations of PTCA, reduced the angiographic and clinical restenosis rates in De Novo lesions compared to PTCA alone and decreased the need for CABG. BMS substantially reduced the incidence of abrupt artery closure, but restenosis still occurred in about 20 to 40% of cases, necessitating repeat procedures. The invention of Drug Eluting Stents (DES) significantly improved on the principle of BMS by adding an antiproliferative drug (directly immobilized on the stent surface or released from a polymer matrix), which inhibits neointimal hyperplasia. The introduction of DES greatly reduced the incidence of restenosis and resulted in better safety profile as compared to BMS with systemic drug administration. These advantages and a lower cost compared to surgical interventions has made DES an attractive option to treat coronary artery disease. Therefore this observational registry has been designed for the clinical evaluation of the ORSIRO LESS requiring coronary revascularization with DES. It is designed to investigate and collect clinical evidence for the clinical performance and safety of the Orsiro Drug Eluting Stent System in an all-comers patient population in daily clinical practice.

Unknown status7 enrollment criteria

Prevalence and Prognostic Value of Unrecognized Myocardial Injury in Stable Coronary Artery Disease...

Stable Angina Pectoris

This study includes patients with stable coronary artery disease without previously known myocardial infarction, and investigates the prevalence of clinically unrecognized myocardial damage and its prognostic implication.

Unknown status9 enrollment criteria
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