View clinical trials related to Coronary Artery Disease.
Filter by:About 13 million people in the United States have coronary artery disease (CAD). It is the leading cause of death in both men and women. Coronary artery disease (CAD) occurs when the blood vessels that supply blood to the heart muscle (the coronary arteries) become hardened and narrowed. The arteries harden and narrow due to buildup of fatty and calcified material called plaque on their inner walls. The buildup of plaque is also called atherosclerosis. This is a process which starts early in life, but can be influenced by multiple factors. Several factors increase the risk of developing atherosclerosis. They include high blood pressure, smoking, diabetes, high cholesterol and being related to someone who had a heart attack or a stroke. The more risk factors you have, the greater the chance that you have severe atherosclerosis. Some of the risk factors cannot be modified, like age and family history of early heart disease. The influenceable factors include high blood pressure, high blood cholesterol, high blood sugar, cigarette smoking, overweight or obesity, and lack of physical activity. Nevertheless, there are patients without any above mentioned risk factors who develop atherosclerosis. In addition to that, there are also patients with several risk factors who do not develop severe coronary artery disease. According to research studies high blood levels of some substances in the blood (biochemical markers) as well as some genes in the DNA of our cells may be associated with an increased risk of developing CAD and faster progression of the disease. The purpose of this study is to find a correlation between certain blood markers and growth of the plaques, regardless of the presence of the classic risk factors for atherosclerosis. If we prove our hypothesis we will be one step closer to predicting the extent of atherosclerosis by performing certain blood tests.
Subjects in this research study have Coronary Artery Disease (CAD). This occurs when there is a build-up of fatty material in the wall of the heart arteries that causes narrowing of the arteries. This could lead to chest pain, a heart attack, weakening of the heart and/or permanent damage to the heart. As part of their normal routine care, subjects had or will have a Percutaneous Coronary Intervention (PCI) to restore the blood flow in the arteries of their heart. During a PCI procedure, pictures are taken of the arteries before and after the treatment of the narrowing in the arteries. These pictures are acquired through angiography which is a way to produce X-ray pictures of the inside of arteries. After a PCI procedure, there is a possibility for narrowing of the arteries to return. The likelihood of this happening can be greatly reduced by lifestyle changes and adhering to heart medication regimens. It is part of normal, routine care for CAD patients to be given written and verbal information on how to lead a heart healthy lifestyle and to take heart medications properly. In this research study, the investigators will show half of the patients their before and after images of their heart arteries where the narrowing occurred and was treated. The other half of the patients will not be shown these images. Both groups will still receive information about lifestyle and medications as part of their normal, routine care. At the end of this study, the investigators will compare both groups to see if there are any differences in making lifestyle changes and taking heart medications properly. Additionally, the investigators would also like to see if there are any resulting differences in the amount of hearts attacks or other heart related medical events.
The objective of this study is to evaluate the safety and effectiveness of the clinical and technical performance of the CorPath® 200 System in the delivery and manipulation of coronary guidewires and stent/balloon systems for use in percutaneous coronary interventions (PCI).
This is a trial of screening for ALOA-IgG AtheroAbzyme Test comparing healthy, asymptomatic myocardial ischemic and acute coronary syndrome patients.
All patients who have received GENOUS stent implantation at Queen Mary Hospital for treatment of ischemic heart disease are eligible for this study. Those with clinical indications to undergo restudy coronary angiogram or staged procedure PCI will be primarily recruited into this study. Optical coherence tomography (OCT) will be performed early after stent implantation to evaluate vascular healing response and neointimal coverage.
- Aim The AVOID (Air Verses Oxygen In myocardial infarction) trial is designed to determine if the withholding of routine oxygen therapy in patients with acute heart attack leads to reduced heart damage compared to the current practice of routine inhaled oxygen for all patients. - Background There is evidence supporting and refuting the current practice of providing oxygen to all patients with acute heart attack. A recent summary of clinical trials suggested that oxygen may increase the degree of heart damage during heart attack. It also highlighted that the few trials into oxygen therapy were performed before the use of modern medications and procedures to treat heart attack and that further studies were urgently needed, using contemporary practices. - Design A total of 334 patients will participate in this randomized controlled trial. Patients in this study will receive the best current management and care for their condition. Patients will be randomized to routine pre-hospital care with oxygen therapy vs pre-hospital care without oxygen therapy. Patients will then receive standard hospital care, aside from allocated oxygen or no oxygen therapy. The primary outcome measure of heart damage will be investigated using routine blood tests. With additional information gathered from other aspects of routine heart care including coronary angiogram, electrocardiograms and complications of hospital stay. Patients will be followed up at 6 months to determine any longer term effects of treatment.
Adiponectin and exercise training contribute to the maintenance of a normal vascular tone by influencing vascular NO bioavailability and concentration and function of endothelial progenitor cells. The molecular mechanisms are only partially understood. Therefore, aim of the present study is to elucidate the effects of Adiponectin on endothelial progenitor cell migration and the underlying signaling pathways. Furthermore, the impact of exercise training on adiponectin-mediated endothelial progenitor cell migration will be investigated.
This is a prospective, controlled observational trial of patients undergoing clinically indicated cardiothoracic computed tomography (CT), including pulmonary or aortic angiography and coronary CT angiography (CCTA).
The purpose of the study it to evaluate whether primary percutaneous coronary intervention (primary PCI) with a new thrombectomy device as compared to primary PCI without thrombectomy increases minimal flow area after stenting for treatment of patients presenting with ST-segment elevation myocardial infarction (STEMI) as assessed by OFDI.
The present project aims to determine whether a deficit in migration of stem cells could be implicated in the failure to mount an adequate collateralization after Myocardial Infarction (MI) and thereby facilitate the development of post-ischemic heart failure (HF) and to dissect underlying molecular mechanisms. Furthermore, the investigators wish to determine the predictive value of stem cell migration assay in patients with MI.