View clinical trials related to Coronary Artery Disease.
Filter by:Little is known on the prevalence of sleep disorders and their role in the increased prevalence of cardiovascular diseases in the developing world. We To assess the prevalence of major sleep disorders in a rural South American population, and to determine whether these conditions are associated with a poor cardiovascular health or with the occurrence of stroke or ischemic heart disease. This is a three-phase, population-based, door-to-door survey in Atahualpa. During phase I, all residents aged ≥40 years will be screened with validated Spanish versions of five questionnaires to evaluate major sleep disorders. In phase II, neurologists will examine persons suspected of having a sleep disorder and a random sample of negative individuals to assess the prevalence of these conditions and to validate the accuracy of questionnaires. In phase III, patients with a confirmed sleep disorder will undergo nocturnal polysomnography for achieving a more specific diagnosis. The occurrence of sleep disorders will be correlated with the cardiovascular health of the population as well as with the presence of stroke and ischemic heart disease. This epidemiological study may prove cost-effective in improving sleep conditions of people living in rural areas of developing countries, and may be used as a model for the evaluation of sleep disorders and their cardiovascular correlates in these populations.
Cardiovascular complications account for the highest mortality in type 2 diabetic patients, mainly due to coronary artery disease (CAD). Most of the attention in treating CAD in type 2 diabetes is understandably directed toward treating coronary artery conditions. However there are other treatable culprits in these patients. Left ventricular hypertrophy (LVH) is widespread in type 2 diabetic patients with CAD, even in the absence of hypertension. It is a strong predictor of cardiovascular events and all-cause mortality. Regression of LVH has been associated with an improved prognosis, independent of change in blood pressure (BP). Therefore, cardiovascular events and mortality in type 2 diabetes with CAD might will be reduced if the investigators can find novel therapies to regress LVH. Alpha-lipoic acid reduces oxidative stress which then regresses LVH. Alpha-lipoic acid can improve endothelial function in diabetic conditions. Hence, the main aim of this study was to assess whether alpha-lipoic acid could regress LVM in type 2 diabetic patients with CAD.
The primary objective of this project is to demonstrate that a new approach to cardiac stress imaging that combines treadmill exercise with cardiac magnetic resonance (CMR) provides valuable clinical information in a cost-effective manner.
This study is the sub-study of OPINION Trial. (UMIN000010580) The aim of this study is to evaluate how Optical frequency domain imaging (OFDI) or Intravascular Ultrasound (IVUS) imaging technology influence to the Percutaneous Coronary Intervention (PCI) strategy.
The aim of this randomized study is to evaluate the impact of Optical frequency domain imaging (OFDI) guidance for Percutaneous Coronay Intervention (PCI) with drug-eluting stent (DES) as compared with Intravascular ultrasound (IVUS) guidance.
Visceral obesity is the one of the major causes of cardiovascular morbidity and mortality in industrialized countries. Adipose tissue secretes various kinds of bioactive molecules termed adipokines which contribute to the development of obesity-related disorders including cardiovascular disease (CVD). Progranulin and CTRP3 are recently discovered novel adipokines. Therefore, the investigators tried to compare circulating CTRP-3 and progranulin levels in patients with CAD and investigated whether CTRP-3 or progranulin is significantly associated with CAD prevalence after adjustment for well-known CAD risk factors.
A first therapeutic education is given before patient's discharge at the hospital, then a dedicated nurse follows patients through the phone,regularly according to patients' needs, continues to give advise on risk factors, information on medication and alert symptoms and therapeutic education.
Cardiovascular complications account for the highest mortality in type 2 diabetic patients, mainly due to coronary artery disease (CAD).Left ventricular hypertrophy (LVH) is widespread in type 2 diabetic patients with CAD, even in the absence of hypertension .It is a strong predictor of cardiovascular events and all-cause mortality . Sitagliptin, an inhibitor of dipeptidyl peptidase-4 (DPP-4), may regress left ventricular mass (LVM) in newly diagnosed type 2 diabetic patients with CAD .
Rationale IVUS has shown to be efficient for bare metal stent deployment, but has not been specifically studied for Drug Eluting Stents. The angiographically versus IVUS optimization (AVIO) study was performed with (medical device's type )Promus stent, results are promising, but the study was not designed for clinical endpoint. There is no consensus on IVUS criteria for stent deployment. The MUSIC criteria were widely used in the early 2000, but have limitations for complex long lesions. The AVIO criteria were recently proposed for complex lesions, but these criteria also have some issues and the complexity make their routine use challenging. We performed a pilot study for long complex lesion analysis using IVUS, in order to define easy to use criteria, applicable for complex lesions in drug eluting stents (DES) era. The new criteria (OPERA) are an adaptation of the MUSIC criteria. OTELLO study is an ongoing trial sponsored by Boston Scientific Inc, to determine Major Adverse Cardiac Event with the new TAXUS Element stent. 500 patients will be enrolled in the study. Main question Is IVUS using simplified new criteria beneficial for long (>28mm) TAXUS element stent deployment? Study design This study will consist to prospectively include consecutive patients with>28mm taxus element stent using IVUS. OPERA Criteria for stent deployment will be the objectives to reach. OPERA is an adaptation of the MUSIC criteria for long complex lesion. The patients from the OTELLO study, with the same inclusion criteria, will composed the control group . Population will be matched using the propensity score. 20 to 30 French centers involved in OTELLO study will be contacted for participating in OPERA. Hypothesis: Long lesion percutaneous coronary intervention(PCI) have specific characteristics like Diffuse old atheroma Calcifications Discrepancies between prox and distal diameter Infiltration longer than the target lesion Bifurcations Inhomogeneous strength due to the balloon (Laplace law) Primary hypothesis Long Taxus element deployed using IVUS and OPERA criteria have better outcomes than without IVUS Primary Objectives 38% MACE (SAT, target lesion revascularization (TLR), myocardial infarction (MI), Death) reduction using IVUS and OPERA criteria for Taxus element ≥ 28 mm implantation Secondary endpoint 1. MACE determination for Taxus element ≥ 28 mm implantation with IVUS and OPERA criteria 2. Safety: procedural Stroke, Urgent cardiac surgery, procedural MI 3. Comparison of IVUS criteria: OPERA, MUSIC, AVIO Secondary objectives Safety of OPERA criteria Feasibility of using OPERA criteria in non expert IVUS center MACE determination with a 4% margin error for Taxus element ≥ 28 mm implantation with IVUS and OPERA criteria Methods Inclusion of consecutive patients using IVUS Taxus element ≥ 28 mm in a multicentric study propensity score matched analysis matched for comparison to OTELLO study. (Same inclusion criteria as OTELLO) Statistical analysis Primary Endpoint: MACE expected in the OTELLO study=18% MACE expected in the OPERA study=11% Number of patient in the OTELLO study=500 Alpha=0.05,1- Beta=0.73 Number of patients analysable in the OPERA study needed =250 patients i.e 300 pts inclusions. Secondary Endpoint 4% margin error with a MACE of 11% need also 250 pts Type of study Biomedical research French study Centralized IVUS analysis 1, 6 and 12 months telephone contact Safety and efficacy measures Efficacy: MACE (Cardiac Death, target vessel revascularization (TVR), Myocardial Infarction) at 12 months Safety: procedure related event: Urgent surgery, According to Good Clinical Practices serious adverse event (SAE) declared within 24 Hours
The study hypothesis is that a meshed conduit made of safen vein allows a better patency at mid-long term than a safen vein alone. To test this hypothesis the investigators plan a prospective, randomized study, comparing grafts to the diagonal, in cases of vessel diameter under 1.5mm. A control angiography will be performed one year after the operation.