Active clinical trials for "Coronary Artery Disease"

This prospective, observational study evaluates the accuracy of stress testing with the MyoStrain SENC CMR Imaging System to detect myocardial ischemia and viability in patients with suspected coronary artery disease using low levels of stress.

Preliminary experiences show that IVL is promising for achieving an effective plaque modification at time of PCI. However, uncertainty about the optimal tool to select in case of calcification of coronary lesions exists, as no randomized comparisons between rotational atherectomy and intravascular lithotripsy have been carried out so far. The aim of this pilot randomized trial is to evaluate the efficacy and safety of intensive plaque modification with rotational atherectomy vs. intravascular lithotripsy before placement of a drug-eluting stent.

This study will evaluate the effect of a cardiac rehabilitation (CR) programme on blood protein molecules that may improve the function of arteries in coronary artery disease (CAD) patients who have suffered a heart attack. CAD patients who have either agreed or disagreed to take part in a CR programme will be recruited. This will allow a comparison of the study measurements between a group of patients who complete a CR programme and a group of patients who do not. The other objective of this study is to perform interviews with the study participants and their significant others (i.e. spouse, family member, or a close friend) to listen to the reasons why patients agreed or disagreed to take part in a CR programme.

Improving physical activity is a core component of secondary prevention and cardiac (tele)rehabilitation. Commercially available activity trackers are frequently used to monitor and promote physical activity in cardiac patients. However studies on the validity of these devices in cardiac patients are scarce. The aim of this study is to determine the accuracy and responsiveness of two wrist-worn activity trackers, Fitbit Charge 2 (FC2) and Mio Slice (MS), for the assessment of energy expenditure (EE) in cardiac patients.

Introduction: The distal radial technique which consists of canalizing the radial artery through the anatomical snuffbox has recently emerged as an alternative arterial intervention for diagnostic and therapeutic coronary catheterization. Aims: To evaluate the feasibility and safety of the distal transradial approach (dTRA) as a default route for coronary angiography (CAG) and percutaneous coronary intervention (PCI).

In a double-blinded randomized clinical trial, all patients undergoing coronary artery catheterization who will met our criteria, will be enrolled into three groups to receive either, vitamin e, n-acetylcysteine, or placebo. The aim of study will be to compare the superiority of vitamin e over n-acetylcysteine for the prevention of contrast-induced acute kidney injury (CIAKI).

Rotational atherectomy (RA) facilitates percutaneous coronary intervention for complex de novo lesions with severe calcification. Some observational studies and a small randomized trial indicated that a strategy of routine RA did not conferred reduction in restenosis or MACE, but these studies are limited by missing follow-up, insufficient power to compare outcomes, and confounding factors in the RA group (long lesion length, etc.). With recent developments in medical therapy, advances in design and delivery of drug-eluting stents (DES), and advances in noninvasive and intravascular coronary imaging, the use of RA in current real-world practice remains to be well determined. We aimed to compile real-world clinical outcomes data for the RotablatorTM Rotational Atherectomy System in routine clinical practice in China.

We hypothesize that human epicardial fat plays a thermogenic role to the myocardium. We hypothesize that epicardial fat may express genes of brown fat and thyroid function that are down-regulated by the presence of coronary artery disease. Because the postulated metabolic role of the epicardial fat, we also hypothesize that the gene expression of these regulatory thermogenic factors is higher in epicardial than subcutaneous fat This will be a cross-sectional study conducted over a one-year period in patients with or without coronary artery disease who require elective cardiac surgery regardless their participation in the study. Study group will be formed by 50 patients with clinically and angiographically established CAD who will undergo coronary artery bypass graft, as part of their standard medical care. Control group will be formed by 10 subjects, randomly selected, who will undergo cardiac surgery for aortic or mitral valve replacement as part of their standard medical care (these patients have no history, clinical signs of CAD, and show normal coronary arteries on coronary angiography). This will be a cross-sectional study conducted over a one-year period in patients with or without coronary artery disease who require elective cardiac surgery regardless their participation in the study. Adipose tissue will be collected during the cardiac surgery.

The aim of this prospective cohort study is to assess the quality of therapy in patients with stable ischemic heart disease (IHD) who had never applied for specialized medical care for the last 3 years and try to accord their treatment with current clinical guidelines.

Atherosclerosis is accompanied by microvascular dysfunction (an impairment of blood vessels to dilate or constrict in response to demand). The ability to reliably measure microvascular dysfunction would help identify patients at risk of myocardial infarction and test new treatments. All existing measures of microvascular dysfunction suffer significant limitations. Near Infrared Spectroscopy (NIRS) is an imaging method that uses an infrared light-source and detector (called optodes) to painlessly shines light into tissue and collect reflected light at different wavelengths. This data allows quantification of the amount of haemoglobin (blood) in the tissue and whether it is oxygenated or de-oxygenated. Diffuse optical tomography (DOT) is a powerful analysis technique for data collected from multiple NIRH optodes. Unlike most NIRS studies that use a single pair of optodes and collects a single datapoint for each wavelength over time, DOT allows three-dimensional spatial reconstruction of haemodynamic and anatomic changes in a large region of tissue over time. In preliminary work DOT had the potential to measure forearm reactive hyperaemia, a key indicator of microvascular function. Team will test whether DOT can detect differences between patients and healthy volunteers. In this work, 30 patients will be recruited with type 2 diabetes, 30 patients who have had a previous myocardial infarction and 30 healthy volunteers. The Investigator will also recruit 50 patients who are on waiting lists for coronary angiography. The DOT will be used to measure participants' microvascular function after brachial artery occlusion by a blood pressure cuff. The Investigator will then examine whether DOT can detect differences between healthy volunteers, diabetics, and patients with a previous heart attack, and whether DOT is able to predict existence of coronary artery disease on angiography. If successful, DOT can be developed for assessment of microvascular function to the point where it could be applied to clinical studies.