Active clinical trials for "Coronary Disease"

This is a retrospective study, designed to be conducted at a single-center in the US. The study will conduct a one-time data abstraction from approximately 500 patient medical charts who received Age/Sex/Gene Expression score (ASGES) also knows as Corus CAD testing, by order of the Principal Investigator. Limited demographic data and patient data pertaining to cardiology referral or advanced diagnostic testing will be collected. All data will be collected anonymously.

The primary goal of this study is to determine the prevalence of undiagnosed asymptomatic coronary artery disease (CAD) in Kalamazoo and its neighboring areas using Coronary Computed Tomography (CCTA) and Coronary Artery Calcium Score (CACS) to assess if asymptomatic CAD is widespread enough to warrant implementation of CCTA as a routine screening tool. Additionally, this study will use the CCTA results to evaluate several methods of assessing CAD risk in the asymptomatic population including Framingham Risk Score (FRS) and Reynold's Risk Score, Biomarkers (High sensitivity C-Reactive Protein, Fibrinogen, Vertical Auto Profile, oxidized Low Density Lipoprotein (LDL), Apolipoprotein A1 (ApoA1), Apolipoprotein B1 (ApoB1), Vitamin D, Homocysteine) as well as a large panel of genetic markers of atherosclerosis and dyslipidemia.

Main aim of the COMBAT-CAD-Study is to clarify, if the combination of stress testing with biomarkers improves the diagnostic accuracy. Hypothesis of our study is that diagnosis of CAD can be improved by adding biomarkers to solely stress testing for the workup of patients with suspected CAD or progress of already known CAD.

Regular exercise training has shown to improve exercise capacity in patients with cardiovascular disease. The feasibility and transferability of exercise training in a community based cardiovascular rehabilitation setting is currently less well investigated. The objective of this study is to translate regular exercise training into a community based setting. A 6 months training intervention program with lifestyle counseling is performed, with both supervised training in rehabilitation centres as well as home based training. The aim of the project is to implement this program for a wider patient population and to improve exercise capacity, diastolic function as well as cardiometabolic parameters.

To determine whether, in a population of patients presenting to the rapid access chest pain clinic (RACPC), routine FFRct (Fractional Flow Reserve Computed Tomography) as a default test is superior in terms of resource utilisation when compared to routine clinical pathway algorithms recommended by the National Institute for Health and Care Excellence (NICE)

The purpose of this study is to advance research through collaboration, 4C was established in the United Kingdom (UK) in 2009 as a resource in which deoxyribonucleic acid (DNA) and biomarker samples were obtained at time of presentation with chest pain linked to detailed phenotypic data obtained from electronic health records and participant self-completed questionnaires. The investigators sought to explore and assess the current potential of setting up a comparable consented research platform by collecting DNA samples and to quantify the extent to which diverse NHS hospital information systems are accessible for extracting secondary care data (structured and unstructured) for research purposes at scale.

Background: - This study is designed for people who need a standard, non-research invasive coronary angiogram to find out if they have heart disease. Researchers want to take a computed tomography (CT) scan of people s hearts before their procedure to see if this less invasive test can also diagnose coronary artery disease. Objectives: - To learn if a new way to view CT pictures is able to accurately diagnose coronary artery disease. Eligibility: - People age 55 and older who need a coronary angiogram. Design: Participants will be screened with their medical records. Participants may give a blood sample. Participants may have a CT scan of the heart with and without contrast. The CT scan will not interfere with their medical care. Participants blood pressure and heart rhythm will be monitored before, during, and after the CT scan. They may have an electrocardiogram. Before the scan, participants will have an intravenous catheter put into their arm. It will be used to inject contrast. Participants may take a beta blocker to slow their heart rate. Participants may take nitroglycerin under their tongue. It will enlarge their heart blood vessels and improve picture quality. It may cause a flushing sensation or headache. Participants will lie on their back on a padded table. The table slides into a large, donut-shaped machine. An x-ray tube will move around their body, taking pictures. They will be asked to hold their breath for 5 seconds at a time. Participants will be called 30 days after their angiogram. They will answer questions about their health, hospital visits, or medical treatments.

Lesions involving coronary bifurcations account for approximately 20% of all percutaneous coronary interventions (PCI). Revascularization within bifurcation sites remains technically challenging. While the most optimal interventional treatment strategy for bifurcation lesions is still debatable, side branch (SB) occlusion is one of the most serious procedural complications with prevalence rates over 7%. Numerous mechanisms of the SB occlusion (e.g. plaque or carina shift, coronary artery dissection, thromboembolism, coronary artery spasm, etc) have been postulated. Regardless of the cause, loss of the SB is associated with increased risk of periprocedural mortality and myocardial infarction. Therefore, PCI involving coronary bifurcation mandates consideration of the risk of SB compromise. The CT-PRECISION (Computed Tomography angiography PREdiCtIon score for SIde branch Occlusion in coronary bifurcation interventioN) registry was designed to evaluate the application of coronary computed tomography angiography (coronary CTA) for the prediction of SB occlusion during percutaneous revascularization of bifurcation lesions. The main purpose of this single-center study is to develop a noninvasive CTA-based prediction tool to determine the procedural outcome of PCI in bifurcation lesions.

Background: the decision-making process of patients with angiographically-intermediate coronary lesions (ICL) is clinically challenging and may benefit from adjunctive invasive techniques. Fractional-flow-reserve (FFR) represents the gold standard to evaluate ICL but optical-coherence-tomography (OCT) is a novel, promising, high resolution coronary imaging technique. Objectives: Investigate the relation between OCT and FFR parameters in ICL and understand if OCT measures may predict FFR. Understand if OCT parameters may predict clinical outcome of patients with ICL not underwent revascularization on the bases of negative FFR. Study design: multicentre, international, individual patient's level data pooled analysis.

The study will estimate the current status of participants with non-obstructive coronary artery disease confirmed via coronary angiography.