Active clinical trials for "Myocardial Ischemia"

This translational study was designed to explore the association of the quantity and quality of epicardial adipose tissue (EAT) with coronary artery disease (CAD), left atrial remodeling and postoperative atrial fibrillation in a high cardiovascular disease-risk population. The investigators expect to identify new biochemical factors and biomarkers in the crosstalk between the epicardial adipocytes, coronary plaques and atrial cardiomyocytes that are involved in the pathogenesis of atherosclerosis and atrial fibrillation, respectively.

The study will investigate the influencing factors of exercise adherence of home-based cardiac rehabilitation in patients with coronary artery disease.

According to 2011 ACCF/AHA guideline and 2014 ESC/EACTS guideline, CABG surgery was recommended for three-vessel coronary artery disease and left main coronary artery disease in the patients with stable ischemic heart disease as class I. 2-VD with proximal left anterior descending artery stenosis was also indicated for CABG surgery as class I recommendation. However, many patients have been recommended for PCI by catheterization laboratory cardiologist; 46% and 93% in the only-CABG candidates and both CABG and PCI candidates, retrospectively, defined by previous ACC/AHA guideline. Although the discordance between real practice in catheterization laboratory and guideline would be adjusted by recently updated guideline. The revascularization strategy for patients with 3-VD/LMD in real practice have been getting toward more PCI and less CABG surgery. In this study, we will identify the rate of CABG candidates who were treated with PCI or medical treatment instead of CABG surgery in different from current guideline. We are also going to compare two treatment strategies CABG surgery vs. PCI with 2nd generation DES regarding clinical outcomes.

Turner syndrome is a congenital complete or partial lack one of the female sex chromosomes affecting 1 of 2000 live born girls. The syndrome is characterized by an increased prevalence of ischemic heart disease, aortic dilation and dissection, hypertension, stroke and autoimmune diseases in general. Our study aim is: Using MRI to further characterize and find risk factors leading to aortic dilation. Using MRI to assess the degree of aortic distensibility. Using Computed tomography x-ray scanning of the heart and coronary arteries to characterize the prevalence and degree of ischemic heart disease and coronary anomalies. Using pressure sensitive ultrasound (applanation tonometry) to assess the degree of aortic stiffness when compared to controls using end points as Pulse Wave Velocity, Augmentation Index and Central Pulse Pressure.

To validate the capability of non-invasive bio-image tests in prediction of significant coronary stenosis of symptomatic adults.

The purpose of this study is to evaluate serial changes of neointimal coverage after everolimus-eluting stent implantation at 3-, 6- and 12-months by OCT examination.

A total of 621 consecutive male and female subjects, without established CAD, referred to exercise stress testing (EST) due to 1) chest pain syndromes or equivocal/equivalent angina with intermediate pretest probability for CAD; 2) , or asymptomatic subjects with diabetes mellitus who are referred EST for risk assessment prior to initiation of an exercise program. To validate the diagnostic performance of the HeartTrends device for the detection and ruling out of myocardial ischemia in a population of subjects who are currently referred for cardiovascular evaluation using EST. Prospective multicenter single-armed study, assessing the diagnostic accuracy of HRV analysis by the HeartTrends device for the detection of myocardial ischemia, as determined by stress echocardiography.

The registry study is to obtain the state of the art of the percutaneous coronary intervention state treatment for coronary heart disease in Beijing area of P.R.China in a real world. The data are collected from 48 hospitals in Beijing area using an uploading system through internet.

The purpose of this study is to determine whether polymorphisms in G protein subunits, namely Galphas and Galphaq, are associated with altered cardiac performance in heart failure patients.

With the advances in multidetector computed tomography (MDCT) technology, CT angiography (CTA) of the coronary arteries using 64-slice or dual-source CT systems has evolved into a robust, alternative, noninvasive imaging technique to rule out coronary artery disease (CAD). Reported sensitivities and specificities of coronary CTA can compete with those of catheter angiography. Because CT is the major source of ionizing radiation in medicine, dual isotope myocardial perfusion scintigraphy and coronary CTA 16-, 64-slice MDCT and DSCT scanners are associated with the highest amount of radiation dose. Recently, a new generation of MDCT machines with even more detector row (320) has become clinically available. The maximum detector width of 16 cm enables the entire heart to be examined in a single rotation and within a single heartbeat and is expected to substantially reduce artifacts from breathing and body motion. Due to high volume coverage, 320-slice CT machines are able to perform a nonspiral, ECG-gated examination of the heart within a single breath-hold. The purpose of this study was to investigate the correlation of hemodynamic status of 320 MDCT, echocardiography, and coronary catheterization in patients who suspected coronary artery disease.