View clinical trials related to Coronary Artery Disease.
Filter by:Coronary artery disease (CAD) pathophysiology involves endothelium-dependent (e.g. nitric oxide, acetylcholine) and -independent (e.g. adenosine) vascular dilation impairment, which have been demonstrated at the level of small coronary arteries, medium sized peripheral arteries and subcutaneous microcirculation. Oxygen supplementation, which is frequently overused in clinical settings, seems harmful in acute coronary syndromes and increases microvascular resistance in myocardial and subcutaneous microcirculation through alteration of endothelium-dependent and -independent dilation by an oxidative mechanism. Whether endothelial dysfunction, that is well documented at the level of cardiac microcirculation in CAD patients, is also present at the level of subcutaneous microcirculation is unknown. Also, unknown is whether an acute oxidative stress can be used to probe myocardial microcirculatory dysfunction at the level of subcutaneous microcirculation, which is an easily accessible vascular bed for an in vivo assessment of endothelial-dependent and-independent function. Alterations in cutaneous vascular signalling are evident early in the disease processes. Thus, studying subcutaneous circulation in patients with cardiovascular risk factors could provide vascular information early in CAD processes. This study will test the following 4 hypotheses: 1. Endothelial dysfunction observed at the level of microvascular cardiac arteries is readily present at the level of subcutaneous microcirculation in a given CAD patient. 2. An acute oxidative stress such as hyperoxia can be used to test myocardial microcirculatory dysfunction at the level of the more easily accessible subcutaneous microcirculation. 3. Subcutaneous microcirculation of CAD patients has a lesser vasodilatory response to acetylcholine or sodium nipride than matched healthy subjects. In addition, CAD patients are more prone to dermal vasoconstriction in response to oxygen compared to healthy subjects. 4. Taken that oxygen is still too often given in excess in most clinical settings, the aim of this study is to rule out possible pitfalls in coronary pressure and resistance determinations in CAD patients receiving unnecessary oxygen supplementation.
This is a multicenter, prospective trial to measure the test performance characteristics of the Magnetocardiography (MCG) CardioFlux cardiac diagnostic system in detecting clinically significant coronary artery obstruction in patients with symptoms of suspected acute coronary syndrome or who present with a failed stress test with the intention of treat with cardiac catheterization.
The primary objective of this study is to evaluate the rate of deep sternal wound infection at 30 days post-operative following a full median sternotomy in patients treated with SternaLock Blu for rigid sternal fixation. This study will also provide evidence of the clinical performance of SternaLock Blu for up to 90 days using real world evidence methodology. Sternal complications will be reported through 90 days follow up.
The purpose of the study is to see whether the antibiotic combination of 100mg doxycycline, 500mg azithromycin and 300mg rifabutin is a safe and effective treatment for coronary artery disease which has not responded to 'standard treatment'. Coronary artery disease is the process of plaque build up within the walls of the arteries responsible for supplying the heart with oxygen and nutrients. plaque is usually made up of fatty deposits, minerals and various amounts of tissue and white cells which eventually narrows the artery, reducing blood flow to the heart. The resulting damage and build up of fat leads to inflammation of the arterial wall and eventually the arteries narrow. The researchers involved in this study consider that a pathogen called Chlamydophila pneumoniae, which can live inside cells may cause this inflammation of the arterial wall. The purpose of this study is to see if treatment with this antibiotic combination in patients with CHD is safe and effective in reducing disease severity measured at coronary angiography and improving quality of life. Approximately 60 patients will be involved in this trial. the treatment period is 90 days with a further 90 day follow up period.
The Nordic-Baltic Heart Team Initiative for improved long-term coronary artery revascularization outcome compares quality of life and survival after coronary bypass grafting (CABG) vs. percutaneous coronary intervention (PCI) in patients with 1-vessel disease and proximal stenosis of the anterior descending artery (LAD/in patients with isolated proximal left descending coronary artery (LAD) lesion
In systemic lupus erythematosus (SLE), cardiac manifestations, e.g. coronary artery disease (CAD) and myocarditis are leading causes of morbidity and mortality. The prevalence of subclinical heart disease in SLE is unknown. We studied whether a comprehensive cardiovascular magnetic resonance (CMR) protocol may be useful for early diagnosis of heart disease in SLE patients without known CAD
This study compares angiographic and clinical outcomes in patients with long coronary lesions treated with sirolimus-eluting stent (Ultimaster stent) or everolimus-eluting stent (Xience Alpine stent). The study uses a randomized, multicenter, controlled design approach.
Supplemental oxygen is frequently used in patients admitted to hospital due to ischemic heart disease. In the setting of suspected myocardial infarction, clinical practice guidelines advocate the use of supplementary oxygen even in patients with normal levels of peripheral oxygen saturation. The theoretical basis for this practice is that an increase in blood oxygen content may limit ischemia and final myocardial damage and subsequent infarct size. However, although some experimental laboratory data and small studies in humans have supported the use of supplemental oxygen in patients with coronary artery disease, contradicting evidence suggests possible harmful effects, mainly through mechanisms involving coronary vasoconstriction and reduction of myocardial perfusion (hyperoxemic coronary vasoconstriction). In the EPOXY-IMR trial, the investigators aim to further explore possible detrimental effects from routine use of supplemental oxygen on the coronary circulation with special focus on the small vessels referred to as the coronary microcirculation.
Primary Objective: To assess the effects of SAR407899 on coronary vasomotor function using the coronary flow reserve (CFR) in participants with microvascular angina (MVA) and/or persistent stable angina despite angiographically successful percutaneous coronary intervention (PCI). Secondary Objectives: - To assess the effects of SAR407899 on quality of life using Seattle Angina Questionnaire physical limitation scale (SAQ-PL) in participants with MVA and/or persistent stable angina despite angiographically successful PCI. - To assess the safety of SAR407899 in participants with MVA and/or persistent stable angina despite angiographically successful PCI with a focus on identified risks such as hypotension and orthostatic hypotension. - To assess SAR407899 plasma concentrations in MVA participants and/or persistent stable angina despite angiographically successful PCI.
This study evaluates a smartphone-based cardiac rehabilitation program in adults with coronary artery disease. Half of patients will participate in a smartphone-based cardiac rehabilitation program while the other half will receive standard-of-care.