Active clinical trials for "Coronary Artery Disease"

The purpose of this study is to investigate the prevalence and degree of coronary arterial microcirculaiton dysfunction of non- obstructive coronary artery disease in patients with type 2 diabetes. Furthermore, the risk factors of coronary arterial microcirulation would be screened and identified.

The NIA algorithm is similar to the traditional 12-lead ECG equipment. By analyzing patient data, NIA algorithm provides more detailed results compared to traditional 12-lead ECG. Patients with suspected coronary artery disease are conventionally diagnosed and treated by cardiac catheterization. However, cardiac catheterization is invasive procedure. Unless clinical diagnosis is evident before cardiac catheterization, a treadmill exercise test, a nuclear medicine myocardial perfusion test, or a multi-direction coronary CT angiogram is usually performed to increase the accuracy of diagnosis. But these examinations are not accessible to all patients, and are time-consuming and costly.

This is a prospective, multi-center, hospital-based observational study. The aim of the study is to evaluate the prevalence of chronic kidney disease in patients with stable coronar heart disease.

There are several physiologic parameters in evaluating cardiovascular disease. This study will reveal which parameter is the most proper value in predicting disease severity and risk factors of patients.

The study addresses epidemiology of cardiovascular risk factors and major cardiovascular diseases in Russian Federation (urban and rural population). 12 regions of 1600 participants in each will be included.

The investigators aim at evaluating the long-term (5-year) clinical outcome following Absorb BVS implantation in a real world, all-comers population of consecutive patients, as treated according to the indications, techniques and protocols used in the participating institutions.

In this study, the investigators sought to evaluate the feasibility of estimating external hemodynamic stress acting plaque with the use of invasively measured hemodynamic data from pressure wire pullback tracing. In addition, the investigators will also evaluate detailed plaque geometry and vulnerability using optical coherence tomography along with the hemodynamic stress.

The GLOBAL study is an international multi-center, prospective study designed to enroll up to 10,000 consecutive eligible subjects who are clinically referred for coronary CT angiography for assessment of suspected coronary artery disease (CAD). The purpose of the study is to perform extensive biomarker analysis of atherosclerosis in patients phenotyped using advanced imaging modalities of atherosclerosis.

The use of CT Coronary Angioscan (CT-AS) is gaining popularity, but its exact value as evaluation of CAD requires confirmation. We intend to compare the results of CT-AS and convention coronary angiogram results in patients who are scheduled for an ascending aorta aneurysm reparation surgery. These examens are standard of care before this surgery, so there is no additional danger or disadvantage for the patient. We hope to confirm that CT-AS is a reliable screening test for CAD in patient undergoing heart surgery for other reason than CAD.

Overall Aim Coronary artery disease significantly contributes to morbidity and mortality in the United States. Atherosclerotic disease can lead to stenosis of the coronary arteries and subsequent cardiac hypoperfusion. Patients with a critical stenosis of the LAD, potentially leading to acute anterior wall myocardial infarction, may be asymptomatic at presentation with subtle EKG changes as its only manifestation. It is imperative for physicians to recognize patients with new T wave inversions in leads V2-V3 as the standard course of management may lead to poor prognosis. The purpose of this study is to determine if collateral circulation to the left anterior descending (LAD) artery will mask the presence of a Wellens sign and therefore diminish its diagnostic utility. The conclusion of this study would raise awareness for physicians in light of an absent Wellens sign. Hypothesis The presence of coronary collateral circulation to the LAD masks the presence of a Wellens sign (both Type 1 and Type 2) in precordial leads V2-V4.