View clinical trials related to Myocardial Ischemia.
Filter by:This study is aimed at examining the safety and efficacy of rotational atherectomy (RA) in nondilatable calcified lesion complicated by coronary dissection during percutaneous coronary intervention (PCI) procedure.
Endothelial dysfunction is an important predictor - and a determinant - of adverse clinical outcome. Endothelial function is impaired by coronary artery stenting, a stud from our group has shown that it can be improved by platelet inhibition using clopidogrel. However, clopidogrel unresponsiveness is a known problem, and it has been show that the endothelial effects of clopidogrel tend to wane upon prolonged treatment. Whether a more effective anti-platelet therapy is able to prevent/improve not only thrombotic events but also endothelial dysfunction, with potential positive impact on clinical outcome in patients undergoing coronary artery stenting, is an important hypothesis that needs to be further investigated. To date, evidence regarding "ancillary" (non-platelet-dependent) effects of antiaggregant drugs is very limited. For instance, while their antiplatelet effects, and their beneficial effects in patients with acute coronary syndromes, have been clearly demonstrated in multicentric trials, it remains to be shown whether these drugs also protect endothelial function. Interestingly, some authors suggest that the mortality benefit observed in the PLATO study is at least in part independent of direct antiplatelet effects. No study, to date, has tested the effects of prasugrel and/or ticagrelor on endothelial function. With the present trial, the investigators plan to test the effect of clopidogrel, prasugrel and ticagrelor on endothelial function before and up to 4 weeks after coronary artery stenting. This study will provide important pathophysiologic insight on the relationship between platelet aggregation and endothelial function, two parameters that have been shown to influence patients' prognosis.
Study the mechanisms of atherosclerosis based on a comparative study of physical and chemical properties of lipid tissues at various localization with subsequent development of concept of treatment and prevention.
The purpose is to investigate how the adsorptive capacity of the active carbon filter to carbon dioxide in an anaesthetic gas reflector (AnaConDa) is affected by adding inhaled anaesthetic agent. The hypothesis is that addition of inhaled anaesthetic agent will affect the amount of adsorption of carbon dioxide to the active carbon and thereby affect rebreathing of carbon dioxide.
Minimally invasive revascularization of the left anterior descending artery followed by stent implantation versus percutaneous coronary intervention or coronary artery bypass in patients with multi-vessel coronary disease
This study will test the effectiveness of negative pressure wound therapy (using the VAC Prevena device, KCI Canada Inc.) applied to the saphenous vein harvest site after Coronary Artery Bypass Grafting (CABG). When initiated immediately after surgery, this intervention may decrease the incidence of wound infection and non-infectious wound complications. It may decrease wound discomfort and improve mobility and functional recovery of the leg.
This is an observational study of lone Coronary Artery Bypass Grafting procedures with endoscopic vein graft harvesting using best harvesting practices.
The purpose of this study is to determine whether coronary perfusion computed tomography is effective in the treatment of coronary artery disease.
The investigators are trying to determine if a single dose of Ticagrelor will increase delivery of intraarterially-infused adenosine into the forearm interstitium, consistent with adenosine reuptake blockade.
Coronary artery surgery (CABG) is necessary to improve blood circulation in many patients with coronary artery disease. This is done by using alternative blood vessels (grafts) to bypass the stenosed coronary arteries. In CABG, vein grafts are traditionally used where surrounding tissue is removed, this may damage the vessel and influence its patency. The "no-touch" technique was developed by Professor Domingos Souza at the Department of Cardiovascular and Thoracic Surgery, Örebro University Hospital. This technique includes taking out the vein with its surrounding tissue and by this way the vessel is less damaged. The first two follow ups have shown that no-touch grafts had better patency than conventionally extracted graft at 18 months and 8.5 years. This long term follow up is a continuation of the randomized trial started in 1993 where the patency and incidence of stenoses in the no touch and conventional vein grafts has been studied.