View clinical trials related to Atherosclerosis.
Filter by:This is a prospective, multicenter, cross-sectional study to evaluate prevalence of vascular risk factors in children with Down Syndrome and to determine the association between vascular disease risk factors and objective markers of early atherosclerosis.
In a cohort of symptomatic patients referred to coronary computed tomography angiography (CCTA), the investigators aim is: 1. To investigate and compare the diagnostic precision of Rubidium Positron Emission Tomography (Rb PET) and 15O-water PET (15O-water PET) in patients where CCTA does not exclude obstructive coronary artery disease (CAD) using invasive coronary angiography with fractional flow reserve (ICA-FFR) as reference standard. 2. To study the diagnostic accuracy and prognostic value of computed tomography fractional flow reserve (CT-FFR) in patients where CCTA does not exclude obstructive CAD with ICA-FFR as reference standard. 3. To validated a pre-test probability model including genetic and circulating biomarkers. 4. To identify and characterize genetic risk variants and circulating biomarkers importance in developing CAD. 5. To evaluate the bone mineral density in the hip and spine and correlate this to the degree of vascular calcification.
Carotid artery disease is a main cause of ischemic stroke and vascular dementia, and a highly prevalent disease. There is uncertainty about the optimal management of patients with serendipitously or systematically detected asymptomatic carotid artery disease, due to the paucity of information on the predictive features of serious vascular events. While percent diameter stenosis is currently the accepted standard to decide about local interventions (carotid artery stenting or endarterectomy), international guidelines also recommend the evaluation of qualitative features of carotid artery disease as a guide to treatment. There is, however, no agreement on which qualitative features are best predictors of events. Furthermore, a role for metabolic plaque profile, local mechanical and hemorheologic factors in triggering microembolization and silent ischemic events has been proposed from experimental studies. This inadequate knowledge leads to a poor ability to identify patients at higher risk and to an unwarranted dispersion of medical resources, lack of standardization in diagnostic methods, and the use of expensive and resource-consuming techniques. Against this background, the investigators aim at: 1. Prospectively identifying the best predictors of (silent and overt) ischemic stroke and vascular dementia in patients with asymptomatic subcritical carotid artery disease, by identifying the non-invasive diagnostic features of the "vulnerable carotid plaque" as a possible guide for optimal - local and systemic - treatment. 2. Transferring new ultrasound techniques possibly improving risk prediction to the clinical field 3. Assess whether "smart", low-cost diagnostic methods, such as ultrasound-based evaluations integrating established and advanced techniques, may yield at least the same level of prospective information as more expensive and less cost-effective techniques.
The iCorMicA study is a multicentre, prospective, randomised, double-blind, sham-controlled, parallel-group, end-point trial and registry. The investigators seek to determine whether stratified medical therapy guided by an adjunctive interventional diagnostic procedure (IDP) during the invasive management of patients with known or suspected angina but no obstructive coronary artery disease improves symptoms, wellbeing, cardiovascular risk and clinical outcomes.
The aim of the study is to investigate if lesion preparation with a ScoreFlex balloon compared to a standard non-compliant balloon improve vascular healing and minimize lumen reduction after implantation of a Magmaris bioresorbable scaffold.
Ischemia-guided revascularization is the cornerstone of contemporary management of coronary artery disease (CAD). Coronary physiological assessment is advocated in the catheter laboratory to guide percutaneous coronary intervention (PCI), and it is widely accepted that an FFR ≤ 0.80 is a good indicator for vessels to benefit from revascularization. Nevertheless, a significant proportion of PCI patients continue to experience adverse events related to both stented segment and/or residual or diffuse disease. Our group recently demonstrated the feasibility of pullback pressure gradient (PPG) derived from virtual Quantitative Flow Ratio (QFR) pullback curve, which is an index of atherosclerosis functional pattern and can be used to epitomize the pathophysiological pattern of CAD as focal or diffuse. In this regard, the current study will investigate the incremental value of PPG added to QFR haemodynamic assessment in ischemia-causing vessels received PCI in predicting adverse outcomes.
This is an open-label, non-randomized study conducted at Thomas Jefferson University comparing pressure-gradient estimates (obtained between a carotid plaque and the carotid artery) to imaging and histology markers of plaque vulnerability. There is an inverse relationship between the subharmonic signal magnitude from contrast-enhanced ultrasound microbubbles and ambient pressure. This pressure estimation technique (referred as SHAPE) will be used to estimate the pressure gradient across the carotid plaque cap noninvasively in vivo.
The impact of the environment on human health is considerable. An important factor is the effect of temperature on the human body, where either the effects of short-term exposure to extreme temperatures (cryotherapy, sauna, etc.) or the long-term environmental impact are monitored. The study was focused on research of the long-term effect of repeated CWI on atherogenesis, lipid parameters and fat distribution.
The purpose of this research study is to determine which of the two ingredients of Vytorin (Simvastatin or Ezetimibe) is responsible for the anti-inflammatory effects of Vytorin
The purpose of the RCT trial is to determine whether DCB is not inferior to stent in treating intracranial de novo stenosis.