View clinical trials related to Myocardial Ischemia.
Filter by:This study will test whether darapladib can safely lower the chances of having a cardiovascular event (such as a heart attack or stroke) in people with coronary heart disease.
One of the most common ways for preventing coronary heart disease (CHD) is to take aspirin or clopidogrel. However, studies have shown that not all people respond to these medications. The variance in treatment response may be linked to genetics. This study will examine the effects of aspirin and clopidogrel in a population whose genes are well known in order to determine the role that genes play in treatment responses.
To address early vessel healing and thrombus formation after deployment of three distinct groups of stents
To evaluate the short-term and mid-term safety and efficacy of the Catania coronary stent for the treatment of up to two de novo lesions in native coronary arteries.
The use of DES have not diminished the need of improved treatment strategies , especially the treatment of bifurcation lesions still leave much to be clarified. Particularly, for bifurcation lesions where stenting the main branch could result in an obstruction of a vital side branch, many reports have been about using 2 drug-eluting stents. Resulting in less than favorable, target lesion revascularization (TLR) rates, with 10-15% for main branch and 11-40% for side branch. In Japan, the PERFECT multi-center registry evaluated outcomes of single stenting plus kissing balloon technique after Directional Coronary Atherectomy (DCA) removal of tissue plaques. TLR rates for both main branch and side branch were a satisfactory 1.3%. However, the DCA technique is mainly suitable for proximal coronary artery lesions, and takes skilled operators. For the treatment of relatively distal bifurcation lesions, where first POBA is performed, then the lesion is stented, followed by kissing balloon technique to fully expand the side branch, is considered a viable treatment. The Toyohashi Heart Center outcomes from August 2004 for this single stent and kissing ballooning technique, using the sirolimus-eluting stent on bifurcation lesions, achieved a satisfactory 5.2% TLR for both main and side branches, suggesting that using two stents may not be necessarily the ideal treatment. The paclitaxel-eluting stent is expected to become available in Japan from June 2007. This stent's cells can be expanded to a maximum of 3.5mm, which should provide a larger lumen access for side-branch treatment. As such, we developed this study to compare the outcomes of paclitaxel-eluting and sirolimus-eluting stents in bifurcation lesions that require side branch dilatation using the kissing ballooning technique.
Approximately 600,000 women are treated for acute coronary syndrome (ACS) annually in the US. ACS includes heart attack and a milder form called unstable angina. Many of these women have angiograms of which 14-39% show no "significant" coronary artery disease (CAD, cholesterol plaque accumulation in arteries of the heart). The remaining majority of women with ACS have cholesterol plaque buildup which appears severe enough on angiography to limit blood flow to the heart. It is difficult to advise women with heart attacks and no major heart artery blockages on what to do if chest pain happens again. Additional studies are needed to find out why this sort of heart attack happens and to help doctors understand how to treat patients who have this problem in the best possible way. Some women with heart attacks who have no major blockage in heart arteries have cholesterol plaque in the arteries of the heart cannot be seen on angiography but can be seen using a newer technique called intravascular ultrasound (IVUS). IVUS involves creating pictures of the artery walls using ultrasound (sound waves) from within the artery itself. In some women without major heart artery blockage, heart attack is caused by low blood flow due to disease of smaller blood vessels which cannot be seen on angiography or IVUS. This problem can be found using magnetic resonance imaging (MRI), which can show blood flow to the heart. MRI may also be used to show where the heart has been damaged. The pattern of damage could suggest that a heart attack in a woman, who has no badly blocked heart arteries, happened for one (or more) of these reasons or another reason. The Study of Women with ACS and Non-obstructive CAD (SWAN) will use IVUS and MRI to help determine the reasons for heart attacks in women with no major blockages in heart arteries.
This protocol focuses on the development of a noninvasive method of early coronary artery disease detection in diabetes. The overall hypothesis is that risk factors for the metabolic syndrome will predict invasive findings on intravascular ultrasound (IVUS) and noninvasive findings on cardiac magnetic resonance (CMR) perfusion imaging. Secondary objectives will include demonstrating the relative importance of individual risk factors early in disease, demonstrating the positive effects of aggressive risk factor modification on disease, demonstrating the relative importance of treatment of individual risk factors on disease progression or stabilization, and that invasive findings on IVUS will predict noninvasive findings with CMR. Such techniques may allow earlier noninvasive detection of disease as well as tailor treatment early in the disease process making prevention more cost effective. The specific aims of this proposal are as follows: 1. To assess whether risk factors for coronary artery disease, both known and novel, predict quantitative and qualitative plaque characteristics on IVUS and alterations in myocardial blood flow on CMR. 2. To assess whether improvements in risk factors through aggressive treatment improve microvascular function as measured by CMR and plaque stabilization and/or regression as measured by IVUS. 3. To assess which risk factors are most predictive early in disease and to demonstrate which risk factors, when treated, provide the most benefit. 4. To assess whether findings on CMR predict findings on IVUS, thus, providing a noninvasive method of early disease detection.
Evaluate the impact of systematic nursing orientations in the reduction of predicted cardiovascular risk in patients with coronary artery disease during four nursing visits for a 1-year period and compare to a group of patients submitted to conventional treatment.
Major sporting events may have adverse cardiovascular effects in subjects with coronary heart disease. We also hypothesized that the adverse cardiovascular effects of sporting events are a result of psychobiological processes including stress-induced hemodynamic changes, autonomic dysfunction and parasympathetic withdrawal, and inflammatory and prothrombotic responses, all of which may in turn promote myocardial ischemia.
The purpose of the study is to evaluate the safety and efficacy of dosing with mipomersen for 26 weeks in treating severely hypercholesterolemic patients who are on a maximally tolerated lipid-lowering regimen and who are not on apheresis.