Active clinical trials for "Myocardial Ischemia"

Quantitative Flow Ratio (QFR) is a novel method for evaluating the functional significance of coronary stenosis. The purpose of the FAVOR II China study is to evaluate the diagnostic accuracy of on-line QFR with FFR as the reference standard. The secondary purpose is to compare the diagnostic accuracies between online QFR and online QCA, with FFR as the reference standard.

Assessment of myocardial ischemic-reperfusion injury during off- and on- pump CABG.

The overall aim of this study is to determine whether non-invasive imaging with myocardial contrast echocardiography using can provide information on the presence and spatial extent of recent myocardial ischemia by non-invasive echocardiographic imaging.

Evaluation of coronary artery vessel wall healing at different time points in patients undergoing implantion of bioresorbable vascular scaffold by using intravascular imaging. In addition long-term clinical follow-ups are planned for all patients treated with Absorb in the institution

Human epicardial fat is the true visceral fat depot of the heart, and its regional distribution and physiology is of growing scientific and clinical interest. This study aims to characterize the expression profile and function of the epicardial and pericardial adipose tissue compartments of the heart (EAT and PAT). EAT and PAT adipose biopsies will be obtained from patients undergoing coronary artery bypass graft surgery (CABG) or valve replacement surgery.

In which CHD patients with high risk of CV complications are different doses of LIPRIMAR used? For this purpose, data on hyperlipidemia will be elicited over and above the basic nosographic and demographic data, concomitant diseases and cardiovascular risk factor.

The overall goal of this study is to determine if non-invasive imaging with state of the art CT coronary angiography can be used to screen for transplant coronary artery disease in the setting of heart transplant. Our current protocol at UCSF for heart transplant patients involves screening with stress tests as well as coronary angiograms with intravascular ultrasound to assess the diameter of the lumen of the coronary arteries and to assess wall thickness.

The study is designed to evaluate the predictive diagnostic accuracy of SonoMedica's CardioSond digital electronic stethoscope in the detection of coronary artery disease (CAD) in patients without known disease who are referred to cardiac computed tomography angiography (CT scans).

Multislice CT angiography is a novel but already established and widely used in diagnosing coronary artery disease (CAD). It is very reliable in ruling out hemodynamically significant narrowings in coronary arteries (Negative predictive value). However, it may overestimate the severity of the stenoses in up to 30% of the coronary artery lesions (positive predictive value 70%). However, when coupled with a functional or flow-sensitive diagnostic test, such as PET perfusion or coronary doppler ultrasonography, one can assume that even the PPV may be as high as 95 %. Despite this assumption, there's no scientific evidence to support use of such hybrid multi-modality tests at present. The investigators hypothesis is that improving the diagnostic accuracy of non-invasive diagnosis of coronary artery disease will decrease the proportion of patients that need catheter angiographies. The avoidance of these unnecessary invasive procedures will improve patients´ quality of life and may even redirect health care resources in a more efficient way.

Demonstrate the ability of muti-detector computed tomography to adequately perform stress testing will result in a veritable "one-stop shop" of non-invasive cardiac imaging that is, the ability to directly visualize heart arteries with high accuracy and to simultaniously determine the hemodynamic significance of any blockages visualized.