View clinical trials related to Myocardial Ischemia.
Filter by:The purpose of this study is to compare levels of clot formation (platelet aggregation), markers of heart muscle damage, and inflammation in two groups undergoing percutaneous coronary stent implantation. The first group will be on a regimen of high-dose clopidogrel used in combination with bivalirudin plus eptifibatide, and the second group will be on a regimen of high-dose clopidogrel with bivalirudin alone. Clinical outcomes will be determined up to one year after enrollment.
The purpose of this study is to determine if Hemopure® will enhance tissue preservation during Cardiopulmonary Bypass surgery.
We seek to examine the effects of folic acid treatment on vascular function in patients with coronary artery disease. Our hypothesis is that folic acid treatment will improve vascular function
This study is a prospective, randomized, single-center evaluation of the Cypher™ Sirolimus eluting coronary stent system in the treatment of de novo bifurcated coronary lesions comparing provisional modified T stenting with systematic modified T-stenting.
We sight to evaluate whether patients with coronary artery disease (CAD) have more epicardial fat than patients without CAD, which would suggest that epicardial fat may be more than an “innocent bystander” and be actively involved in the disease process. Its role as a modulator of vascular response and myocardial function could potentially lead to new areas of cardiac research. We also sight to evaluate whether epicardial fat from patients with CAD releases more adipokines than subcutaneous fat from these patients which could prompt studies into the differential regulation of adipokine secretion in this tissue. Thus for e.g., the use of thiazolidinediones (glitazones), statins, ARBs or other compounds that can specifically modulate adipokine secretion could be explored to determine their benefit in ameliorating the effects attributable to increased epicardial fat.
Patients receiving BNP or nitroglycerin (IV) during the angioplasty procedure. 24 h after the procedure, vascular reactivity will be re-examined using the brachial artery flow-mediated dilatation study. Blood assays for ET-1, pro-BNP, and various inflammatory markers will be checked before and 24 h after the procedure. It is our hypothesis that endothelial function will be better in the BNP treated patients compared to the NTG treated patients
It would be useful to study coronary arteriovenous difference of various markers in patients who are undergoing coronary angiography for suspected coronary artery disease. Environmental and genetic factors may play a role in the progression of coronary artery disease. The goal of this project is to establish a series of cross-sectional / case-control studies to evaluate risk factors of coronary artery disease in China.
The purpose of this study is to compare graft patency rates following coronary artery bypass graft surgery performed by beating heart vs. conventional techniques using cardiac CT scanning to evaluate the bypass grafts.
There are many reports about the association of coronary artery disease (CAD) and cerebral artery stenosis (CAS), which had been proved to induce stroke and cognition decline after the revascularization including coronary bypass surgery (CABG) or percutaneous coronary intervention. Perfusion defect on nuclear brain scan is also noted to correlate with these neurological complications. On the other hand, the perioperative arrhythmia and following cerebral embolism was also attributed to be one factor inducing such neurological hazards. In the patients with coexistent CAD and CAS (1st group), and also the patients scheduled for CABG or percutaneous coronary intervention (PCI) (2nd group), we, the researchers at Far Eastern Memorial Hospital, attempted to integrate all the parameters mention above, including angiography of coronary and cerebral system, quantitative analysis of nuclear brain scan, biochemical profile, and signals of a new ambulatory device which could record the electrocardiograph (ECG) and electroencephalograph (EEG) simultaneously, in order to define the correlation between them. A chorological relation between EEG signals and ECG signals is our first target to be worked out. Thereafter, we hope to establish a regression model of all involved parameters according to the relation. Such a model, we believe, is essential not only to explain the post-CABG neurological complications, but to prevent them. Furthermore, for the undetermined ischemic stroke patients who had no obvious culprit artery or embolism source, the paroxysmal arrhythmia had long been regarded as the cause. Whether a paroxysmal atrial fibrillation, which had not been disclosed by routine ECG, could induce most of such a stroke is still not known. With this new ambulatory device which could record the electrocardiograph (ECG) and electroencephalograph (EEG) simultaneously, we want to answer the question.
The purpose of the study is to test accuracy of positive preejection velocity to predict left ventricular remodeling and long-term prognosis after revascularization in 200 patients with chronically dysfunctional myocardium. Patients will be followed for 3 years. Our hypothesis is that tissue-Doppler-derived analysis of positive preejection velocity allows to select optimal responders to revascularization; it means individuals with the greatest benefit in terms of LV remodeling and long-term prognosis.