Atherosclerosis
Atherosclerosis is a condition where plaque builds up in arteries, narrowing them and restricting blood flow. Explore clinical studies for atherosclerosis near you.
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Found 1712 Actively Recruiting clinical trials
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This is a prospective interventional study using a stepped-wedge cluster design with a usual care period followed by an intervention period. Participating general practice sites are assigned to one of five predefined sequences determining the timing of transition from usual care to the BiaB intervention. All sites start in the usual care phase and sequentially transition to the intervention phase according to the study schedule. The primary objective of the study is to assess whether use of BiaB shortens the time to diagnosis in patients presenting with breathlessness, compared with usual care without BiaB. Secondary objectives include evaluating whether BiaB increases the number of new diagnoses of chronic obstructive pulmonary disease (COPD) and cardiovascular disease (CVD), and assessing the usability and efficiency of the BiaB tool. The study is conducted in general practice settings in the Netherlands, Spain, and Portugal, with a total of 45 sites. Each site participates for a total duration of 40 weeks. Patients attend a single study visit and may complete up to four quarterly questionnaires over a maximum follow-up of one year. Data are collected during routine clinical care, from electronic medical records, and via questionnaires completed by patients and healthcare professionals. Data from the usual care period, and where available retrospective data, are used as control data for comparison with the intervention period.
RECRUITING
Healthy Volunteer
In Thıs study, we aım to evaluate the erectile status of male patients undergoing percutaneous coronary intervention after both heart attack ( group 1) and stable angina ( Group 2). The primary aim is to assess any possible predictive effect of erectile function status on cardiac events. The secondary aim is to assess the direct effect of myocardial infarction on ED status by comparing the two groups. The secondary objective is to assess and analyse other determinants in the natural history survey of erectile status after the intervention. All male patients who undergo a successful PCI and survive will be evaluated. Patients who have had: Malignancy, underlying neurological diagnosis interfering with erectile status, uncontrolled diabetes, and more than two chronic medical conditions, on polifarmacy ( more than three medications a day), and no sexual relationship, who have not agreed to include the study, will not be included in the study. The follow-up period will be 0 (the time the patient recovered well after the intervention). Questinnaiere will examine the status over the last 3 months. 3 and 6-month follow-up. During the follow-up period, the interviews will be conducted face-to-face in the clinical environment, either by a responsible doctor or an educated nurse. The surveys include: IIEF (International Index of erectile function ) questionnaires BECK depression inventory questionnaires FCRP ( Fear of Cardiac Recurrence and Progression Scale ) The objective scale we use: Age SYNTAX score and residual SYNTAX score for evaluating the cardiac vessels occlusion status Cardiac Ejection Fraction status Laboratory values, including testosterone levels, Bodily measurements, including body mass index and waist circumference. Medications Medical conditions Intervention route ( trans radial or femoral ) The survey will take place in our institutions. The hypothesis is that erectile dysfunction is a preliminary condition of an upcoming cardiac event. Myocardial infarction causes significant changes in erectile function in a natural survey. The syntax score has a direct correlation with the baseline erectile function Residual syntax score has a direct relation with post-intervention erectile status.
RECRUITING
The aim of this study is to develop risk prediction models for the early detection of high-risk patients with structural, rhythmological or inflammatory cardiovascular diseases.
RECRUITING
Healthy Volunteer
Traditional Chinese Medicine (TCM), one of the intriguing features of traditional Chinese culture, has a history of more than 2,000 years, with both unique theories and rich experience. Because of the lack of objective and quantitative evaluation criteria, TCM is complementary or alternative medicine in most Western countries. However, in China, more than 71.2% of patients who have experienced Western medicine, TCM, and integrative medicine (both Western medicine and TCM) preferred the integrative approach, and 18.7% chose TCM as their favourite. Moreover, TCM is increasingly welcomed in many developed countries, such as Australia and the United States. Importantly, patients who used more types of TCM tended to use much less Western medicine recommended by current guidelines. Recent review also highlighted the potential use of TCM as a complementary and alternative approach to the primary and secondary prevention of cardiovascular disease. Perfect Heartio (PH) is a nutritional drink composed of mainly diluted herbal extracts of TCM, including ginger, Glycyrrhiza uralensis, Alternanthera sessilis, Panax notoginseng, red date, Codonopsis pilosula, Ligusticum chuanxiong, Astragalus membranaceus. Broad pharmacological properties of ginger and its bioactive components have been reported, suggesting its potential use in preventing CVD. Glycyrrhiza uralensis stands out for its exceptional therapeutic potential, particularly in enhancing cardiac muscle regeneration, and slowing muscle aging. Alternanthera sessilis has been showed to prevent cardiovascular and liver diseases. Panax notoginseng improve angiogenesis. Red date exerts anti-adipogenicity effects and enhancing endothelial function. Codonopsis pilosula improves the functional state of the cardiovascular system and mitigating the onset and progression of CVD. Ligusticum chuanxiong has been showed to promote blood circulation and remove blood stasis. Astragalus membranaceus also showed to improve cardiovascular function, protect myocardial cells, and increase coronary blood flow.
RECRUITING
Healthy Volunteer
Carotid atherosclerotic plaque rupture is the main cause of ischemic stroke attacks, and early and precise assessment of plaque vulnerability can prevent ischemic stroke. High-resolution MRI can reflect vulnerable plaque features such as thin fibrous caps and large lipid cores, but cannot assess their metabolic information; Fibro-activated proteins (FAPs) of PET are specifically expressed in atherosclerosis and suggest vulnerable plaques by reflecting inflammation-induced fibrosis. The aim of this study was to apply 18F FDG\&68Ga-FAPI PET/MR imaging to investigate the vulnerability of carotid atherosclerotic plaques, to obtain quantitative evaluation indexes of active fibrosis within carotid plaques, and to clarify the PET/MR characteristics of unstable plaques in carotid arteries
RECRUITING
Lp(a) levels play an important role in predicting subsequent ischemic events in patients with established coronary artery disease (CAD), especially those who underwent PCI. However, there are still no approved pharmacologic therapies that specifically target high Lp(a) levels. DAPT consisting of aspirin and a P2Y12 receptor inhibitor represents the cornerstone of pharmacological treatment aimed at preventing thrombotic complications after PCI. Considering that Lp(a) has a prothrombotic effect through its inactive, plasminogen-like protease domain on apo(a), the investigators speculate that prolonged DAPT may have a beneficial effect on reducing future ischemic events in patients with elevated Lp(a) levels after PCI. Some observational studies revealed that DAPT \> 1 year was significantly associated with lower risk of cardiovascular events compared with DAPT ≤ 1 year in patients with elevated Lp(a) levels who were event-free at 1 year after PCI with DES. However, the relative efficacy and safety of prolonged DAPT versus standard DAPT in this high-risk population has never been assessed in randomized controlled trials (RCTs). The DAPT-Lp(a) trial is a multicenter, parallel-group, randomized controlled trial with blinded end-point evaluation. Consecutive patients with Lp(a) levels\>30mg/dL who meet the inclusion criteria and none of the exclusion criteria will be randomized in a 1:1 fashion to 24-month DAPT group or 12-month DAPT group. The investigators hypothesise that, in patients with Lp(a) levels \>30mg/dL who were event-free at 1 year after PCI with DES, 24-month DAPT is superior to 12-month DAPT with respect to major adverse cardiovascular and cerebrovascular events (primary end point), while it is non-inferior to 12-month DAPT with respect to net adverse clinical events (key secondary end point). The investigators estimated that 3,300 patients would be needed to provide the necessary number of confirmed endpoints to test the study hypothesis. Patients will be followed up at 3, 6, 9, 12 months after randomization. All analyses will be performed according to the intention-to-treat (ITT) principle.
RECRUITING
Atherosclerotic plaques, the build-up of fatty materials within our arteries, can develop over a long period of time without causing any symptoms. These plaques may continue to grow and rupture causing narrowing and blockages of the blood vessels. This can lead to serious cardiovascular disease such as a heart attack or stroke causing over 160,000 deaths each year. Lots of research has been done on why particular groups of people may develop atherosclerosis and controlling risk factors such as diabetes and high blood pressure go a long way to reduce people's risks. However, despite the treatments we have available and controlling these risk factors, some people unfortunately still go on to develop a potentially serious disease. Further research has shown us that certain plaques in the blood vessels may be more vulnerable to rupturing compared to others. So far we know that plaques with thin caps, soft centres or those that are able to grow their own tiny blood vessels are more likely to rupture. We have now started to develop new imaging methods to try and help us detect these vulnerabilities. The hope is by being able to detect more vulnerable plaques we may be able to treat these earlier and therefore more effectively. There are different scans available to try and visualise the tiny vessels within these plaques in the neck arteries. These include, MRI (a Magnetic Resonance Imaging scan, taking pictures using a small tunnel), CT (Computed Tomography, uses a ring-shaped machine to take pictures), and ultrasound. Ultrasound has the benefit of being free of ionising radiation and iodinated contrast, therefore posing less risk to patients. However, current ultrasound uses 2D ultrasound. Although this has shown promising results, our blood vessels and any plaques are 3D structures so we don't get to see the whole plaque using 2D imaging and therefore may miss important information. The available 3D probes in use at the moment are not able to visualise the tiny vessels accurately enough. This study uses a different 3D ultrasound probe and ultrasound machine that is able to produce many more images than our usual probes. By taking images with this probe and using offline computer programmes to track the contrast through structures we hope that this system will be able to give us a visualisation of the whole plaque enabling us to detect any new blood vessels more accurately.
RECRUITING
Our study aims to assess the potential of molecular imaging with \[18F\]AlF-OC PET/MRI to characterize and quantify carotid atherosclerotic disease manifestations in patients with a recent stroke/TIA in the carotid artery territory. Eligible patients should have ≥30% stenosis in the ipsilateral carotid artery, as diagnosed by routine CTA. Additionally, we will evaluate the role of \[18F\]AlF-OC PET/MRI in risk stratification for recurrent events of patients with carotid artery stenosis and recent TIA/stroke. This study is a single center study conducted at University Hospitals Leuven in Belgium. In a first part of this study, five patients will undergo serial \[18F\]AlF-OC PET/MRI at 60, 120 and 180 minutes after injection of 4 MBq/kg \[18F\]AlF-OC for protocol optimization and methodology refinement. In the second part of this trial, patients will undergo \[18F\]AlF-OC PET/MRI at the timepoint deemed as optimal based on the findings from the first part. All subjects will be required to undergo a screening and baseline assessment, an imaging visit (\[18F\]AlF-OC PET/MRI) and three follow-up visits (telephone interview at 90 days, 1 year and 3 years after the initial stroke onset). The primary outcome is the quantification of \[18F\]AlF-OC uptake in the carotid artery by measures of standardized uptake value (SUV). For every patient, both culprit (recent symptomatic event in ipsilateral carotid artery territory) and non-culprit (recent symptomatic event in the contralateral carotid artery territory) carotid arteries will be assessed. Secondary outcomes include the predictive value of baseline plaque SUV and TBR for the recurrence of ipsilateral TIA, amaurosis fugax and stroke during 3 years follow-up, the recurrence of all stroke/TIA, the occurrence of any vascular complication (stroke/TIA, myocardial infarction, cardiac arrest, hospitalisation for unstable angina or vascular death) and the occurrence of all-cause mortality.
RECRUITING
Healthy Volunteer
The aim of this study is to develop a comprehensive 10-minute protocol based on function and myocardial tissue characterization without the need for contrast injection, which can be standardized for 70% of cardiac patients. To test this 10-minute CMR protocol for its ability to significantly improve diagnostic decision-making and to reduce cost. To test its clinical feasibility, performance and cost-effectiveness in different populations including: Non-ischemic cardiomyopathies (-)OS-CMR and Ischemic Heart Disease and CAD (+)OS-CMR
RECRUITING
While physicians and patients may be aware of the physical limitations that result from a diagnosis of hypertrophic cardiomyopathy (HCM), thoracic aortic dilatation (TAD) or radiation-induced heart disease (RIHD), there is little research on the impact on quality of life from the limitations imposed with these diagnosis. This study aims to address these unknowns in patients with HCM or TAD as well as radiation-induced heart disease in first-time patients at the Cleveland Clinic. Knowledge gained from this study will provide us the ability for better management of the chronic impacts of the disease by identifying potential risk factors of low quality of life or changes in quality of life over time. This is a prospective, longitudinal, non-comparator, non-randomized survey study describing QOL outcomes for patients with HCM, TAD, or RIHD. Patients being seen for the first time at the Cleveland Clinic for cardiac disease with no previous or scheduled surgery for HCM or TAD will electronically complete a Cardiac Quality of Life Survey at 3 time points (baseline, 3 month \& 9 month). The Cardiac Quality of Life Survey measures the participant's health status in five domains - global, physical, emotional, social, and spiritual - as well as self-efficacy and resilience.
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