Active clinical trials for "Coronary Artery Disease"

The purpose of this study is to determine if magnesium can improve blood pressure, cholesterol, and blood sugar control in patients with implantable cardioverter defibrillators (ICDs).

The possibility of using the new drug eluting stents (DES) technology has significantly changed the mid-term outcome of percutaneous coronary interventions (PCI) in terms of reduced recurrence of angina. The way interventionalists accomplish their work is changing accordingly, with a strong trend to a wider use of DES and a consequent perceived patients' clinical benefit. Evidences supporting the superiority of DES in reducing ischemic recurrence after PCI compared to traditional stents (BMS) are available from randomized studies. A recent meta-analyses underlines that: DES are superior to BMS in reducing clinical recurrence of ischemia, DES and BMS offer identical results in terms of death and infarction, Rapamycin and paclitaxel DES offer similar results. The aim of our study is to perform a multicenter, randomized study to assess the clinical efficacy and safety of the oral prednisone therapy after PCI as a possible systemic alternative to currently available BMS and DES. Furthermore, the study aims at analyzing the clinical outcome of the commercially available DES in the context of an independent research and a cost-benefit comparison with BMS and oral steroids.

This 2 arm study will investigate the efficacy and safety of RO4607381 in patients with coronary heart disease, or CHD risk equivalent. After a pre-randomization phase of 5-12 weeks, patients will be randomized to receive either RO4607381 (900mg po) or placebo po daily for 24 weeks, with concomitant atorvastatin 10-80mg daily, and changes in cholesterol level and lipoprotein metabolism will be measured. The anticipated time on study treatment is 3-12 months, and the target sample size is 100-500 individuals.

How to use drug eluting stents (DES) in bifurcation lesions. A strategy of routine stenting of both main vessel and side branch versus a strategy of routine main vessel stenting and optional treatment of side branch. A randomized Nordic multicenter study including 400 patients with angina pectoris with clinical angiographic follow-up.

The main objective of this study is to assess the safety and effectiveness of the sirolimus-coated Bx VELOCITY™ stent in maintaining minimum lumen diameter in de novo native coronary artery lesions as compared to the uncoated Bx VELOCITY™ balloon-expandable stent. Both stents are mounted on the Raptor® Stent Delivery Systems. The secondary objective is to assess cost-effectiveness expressed in incremental cost/life year gained or cost/quality adjusted life year gained at different time points (8 months, 1 year, 3 and 5 years).

A growing body of evidence links Chlamydia pneumoniae to the progression of coronary heart disease. The purpose of this study is to determine the positive and negative effect of 14 days treatment with clarithromycin 500 mg daily in patients already suffering from stable coronary heart disease. The participants will be followed for at least two years after the treatment. Abbott Laboratories supplied Clarithromycin and placebo tablets.

The purpose of this study is to investigate additional cholesterol lowering effects in patients with coronary heart disease by giving an investigational drug with a patient's current approved cholesterol lowering medication.

This trial will treat patients with a new chemotherapeutic medicine who have undergone a successful and uncomplicated de novo stent placement in up to two native coronary arteries. The purpose of the trial is to determine the appropriate dose of the new medicine for future trials and to evaluate the incidence of treatment-emergent adverse events and serious adverse events.

CT (computed tomography) angiography (CTA) is an examination similar to a CAT scan that uses x-rays and a contrast medium (also called dye) to visualize blood flow in arteries and veins throughout the body. VISIPAQUE™ will be given through a vein in the arm before having the CTA scan of the heart arteries. The pictures it produces of the heart and its blood vessels will be reviewed and compared to those obtained during the catheter-based coronary angiography to see if the CTA shows the same blockages.

Main Research Question(s): What is the effect of continuing aspirin until the time of coronary artery bypass graft surgery and of adding clopidogrel to aspirin after coronary artery bypass graft surgery for preventing blockage of coronary grafts, heart attack, stroke, and death? To reliably answer this question requires a large randomised trial. Before applying for a major grant from the Canadian Institute for Health Research to do the large study we would like to perform a small pilot study of 150 patients to demonstrate that it is feasible to recruit patients and to use a new test called "CT angiography" to determine whether the bypass grafts are still working or have become blocked. (ii) Why is this research important? Coronary artery bypass surgery has made a very important contribution to improving the health and survival of patients with advanced coronary artery disease but still has many problems. One in 10 patients experiences a heart attack at the time of surgery, 1 in 20 experiences a heart attack, stroke, or death during hospitalization, and 1 in 4 patients has at least 1 blocked graft within 1 year of surgery. Antiplatelet drugs such as aspirin and clopidogrel are effective for preventing heart attacks, strokes and deaths but aspirin is usually stopped before coronary artery bypass graft surgery because of concerns about increasing the risk of bleeding. The effectiveness of the combination of clopidogrel and aspirin after surgery has not been evaluated. Our pilot study will provide key information about feasibility that will help us to design and perform a large definitive study in the future. (iii) What is being studied? We will be looking at blood flow in bypass grafts as well as the occurrence of heart attack, stroke, and death. For safety we will be looking at bleeding, transfusion, and need for further surgery because of bleeding. We will also perform laboratory tests of platelet function to measure and compare the effect of the study treatments to prevent blood clots from forming.