Active clinical trials for "Myocardial Ischemia"

The purpose of the study is to collect acoustic, ECG, and clinical data from consenting participants, so that AusculSciences can perform analysis on the sounds produced by the heart and determine the accuracy of the CAD-det System for detecting CAD.

A prospective cohort study was performed in patients with angina pectoris who were treated with oral Chinese patent medicine and Western medicine.Collect primary and secondary efficacy indicators such as the incidence of cardiovascular events, using clinical samples to detect genomics, proteomics, metabolomics, intestinal flora and sclerotia.To explore the clinical efficacy of Chinese patent medicine in the treatment of coronary heart disease with angina pectoris, and provide reliable data support for its clinical application.

The deleterious effects of hyperuricemia (HUA) on cardiovascular disease (CVD) were well established. Aspirin is the most commonly prescribed antiplatelet agent for primary or secondary prophylaxis of CVD. Only a few short-term studies in the elderly suggested low-dose aspirin, e.g., 75-100 mg/day, increases serum urate by reducing urinary uric acid excretion. However, monitoring of renal function is currently not recommended. Little is known about the long-term effect of low dose aspirin on uric acid. The principal aim of this prospective cohort study therefore is to evaluate the renal effects of long-term aspirin (100 mg/d) administration in Chinese patients with coronary artery disease or other CVDs.

Visceral fat or peri-omental fat is increasingly associated with metabolic syndrome, a condition carrying a high risk of coronary artery disease. The independent role of Visceral Fat in cardiovascular risk remains unclear. Patients with excess of visceral fat and NAFLD patients will have higher prevalence of coronary atherosclerosis plaques independently by metabolic syndrome diagnosis. Suggesting that the presence of visceral fat and/or fatty liver will be considered an important condition to optimize the cardiovascular risk stratification

Since finishing the sequencing of the human genome in 2003, genetic research in coronary artery disease (CAD) and other complex traits have developed dramatically. Recent genome-wide association studies have identified a considerable number of common genetic variants each associated with the disease. This has led to a new understanding but also to the discovery of new therapeutical targets. However, each of the variants discovered only have minor effects on disease development and even the pooling of the variants only explains a minor percentage of the total heritability. It has been evident that rare or private mutations probably play a great role in the genetic architecture of CAD, especially among young and severely affected patients. These may only be identified by sequencing. Therefore, the investigators hypothesize, that the use of exome sequencing (the read-off of the entire protein-coding regions of the genome) and linkage analysis in families of extreme phenotype cases, will identify disease-causing genetic variants. From the West Denmark Heart Registry the investigators will enroll a minimum of 120 patients with atherosclerosis who have undergone a coronary artery revascularization procedure before the age of 40, to participate in study part 1. A pedigree analysis will be performed and cardiovascular (CVD) risk factors and current preventive treatment will be evaluated. 1. degree relatives aged 30-65 years, who are free of CAD, are invited to participate in study 2. CVD risk factors are evaluated as well as a CT coronary angiogram is performed to quantify the degree of asymptomatic coronary atherosclerosis. Families from study 1 and 2, who are considered severely affected by atherosclerosis, evaluated on a basis of family size, number of affected and severity of disease, will be selected for exome sequencing. Other relevant family members will be included as well as their CVD risk factors will be evaluated. Exome sequencing will be performed and variants found will be filtered on a basis of frequency, linkage analysis, gene position, existing knowledge and in-silico prediction tools. Possible findings will be validated by Sanger-sequencing and causality of new variants will subsequently be sought to be proven by relevant experimental studies.

The epidemic data shows that prehypertension is associated with cardiovascular disease, and heavy dietary salt intake could improve the developing of hypertension. We detected the risk factors of coronary atherosclerosis of prehypertensive patients with different levels of salt intake. The aim of this multicenter prospective, randomized controlled study is to evaluate regular physical exercise and salt diet effects on progression of coronary artery disease in patients with prehypertension.

There are many risk prediction models. And their estimates are different. This study aimed to investigate the differences between the estimates of Fuwai and Reynolds risk model in Chinese, and investigate the reason for the differences.

Coronary artery disease (CAD), the most common type of heart disease, is caused by hardening of the arteries, or atherosclerosis that is an inflammatory process in which immune mechanisms interact with metabolic risk factors to initiate, propagate, and activate lesions in the arterial trees. Epidemiological studies have found that increased cardiovascular risks are associated with increased levels of inflammatory cytokines (eg, interleukin-6 [IL-6] and tumor necrosis factor-alpha[TNF-alpha]) or their hepatic product, C-reactive protein (CRP). Higher expression of interleukin-Ibeta(IL-1beta),IL-6, monocyte chemotactic protein-1 (MCP-1), and TNF-alpha were observed in epicardial adipose tissues in patients with CAD. These findings suggested that the pericoronary tissues could be a source of inflammatory mediators or act as paracrine that lead to vascular inflammation on CAD pathogenesis. However, adiponectin, a kind of adipocytokine, produced and secreted exclusively by adipose tissue, has been reported to have a variety of anti-inflammatory functions against atherosclerosis, resulting in risk reduction for incidence of CAD events. It remains unclear whether adiponectin and inflammatory mediators in mediastinal adipose tissue contribute to CAD. We therefore aim to analyze the expression of adiponectin and inflammatory mediators in mediastinal adipose tissue between patients with CAD and with valve diseases, and to correlate these parameters with clinical atherosclerotic risks, medications (statins or antiplatelet), and blood sugar.

This study was advocated by Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences in January 2013. It was funded by China major scientific and technological specialized project for 'significant new formulation of new drugs'. DanshenDuofensuanyan is kind of Chinese Medicine injection used for treating coronary heart disease and angina pectoris in many Chinese hospitals. The purpose of this study is to determine adverse drug events or adverse drug reaction in large sample size 30,000 patients.

Evaluation of use of ranolazine in patients with stable heart pain with cardiac magnetic resonance imaging (CMRI) and phosphorous-31 magnetic resonance spectroscopy (31P MRS). Subsequent testing using these modalities will show improved oxygen to the heart muscle.