Active clinical trials for "Myocardial Ischemia"

The purpose of this study is to investigate the change of cholesterol efflux capacity in patients with coronary artery disease treated with secondary prevention drugs, and the correlation with the prognosis.

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.

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

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.

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.

Previous studies comparing on-pump and off-pump operating strategy did only partially demonstrate benefits of the off-pump myocardial revascularisation.In primary end-points (MI, death, renal failure, and so on) there was no significant difference, but in secondary end-points we observed benefits resulting for patients. We would like to show the benefit of the method without extracorporeal circulation in patients with higher and hight operation risk, coming from EuroSCORE classification system (6 points and more).

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.

Atherosclerotic cardiovascular disease is the major cause of morbidity and mortality in Western societies. It is a complex genetic disorder with many genes involved and significant gene-environment interactions. The aim of the study is to identify novel genetic- and biological-markers of atherosclerosis. Atherosclerosis is assessed in the coronary arteries using coronary angiography as well as in the carotid artery (intima-media-thickness) and peripheral vessels (ankle brachial index). Association analysis of genetic and metabolic markers with atherosclerotic burden will be performed to identify novel factors of disposition to atherosclerotic vascular disease.

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.