Active clinical trials for "Coronary Artery Disease"

This is prospective, randomized, multicenter, multinational, randomized (1:1) study. The aim of this study is to assess the importance of functional assessment of coronary artery disease prior to bypass surgery. In particular, an FFR-guided strategy will be compared to the traditional Angio-guided strategy in the guidance of surgical revascularization by aorto-coronary bypass grafting.

Out-patients with coronary heart disease or hypertension will fill out a depression screening questionnaire while waiting in a cardiac clinic. Using a randomised-controlled study design half of the patients will receive a patient-targeted written screening feedback. This feedback contains information about depression in general, depression-severity adapted treatment guidelines and contact-information for treatment. Patients in the control group receive no direct screening-feedback but their cardiologist will be informed about the screening result. All patients with a positive screening-result will be contacted after one month and six months and asked for symptoms of depression, and their use of health care. The aim of this study is to evaluate the efficiency of this minimal intervention on the course of depressive symptom in patients with known coronary heart disease or hypertension.

This study is being done to demonstrate a powerful new method for detecting heart disease that combines the proven prognostic capability of exercise stress testing with the superior image quality of Cardiac Magnetic Resonance Imaging (CMR). The investigators hope to demonstrate that exercise CMR has equivalent or superior diagnostic accuracy compared to exercise stress SPECT for detecting obstructive artery disease.

The purpose of this study is to compare the degree of stent malapposition on an immediate optical coherence tomography (OCT) after nominal stent pressure and at a final post-procedure OCT (ANCHOR-I) and the neointimal coverage on 3-months OCT following the intervention with the randomly assigned two drug-eluting stents (DES), PromusTMElementTM stents versus Xience PRIME® stents.

The purpose of this study is to perform a randomised comparison between the SYNERGY and the Biomatrix NeoFlex stents in treatment of unselected patients with ischemic heart disease.

The purpose of this study is to investigate and compare the images obtained from coronary imaging catheters used in the treatment of coronary blockages both in a clinical setting with patients and in models.

The purpose of this first feasibility study is to evaluate the performance of Vesta™ & VestaCOR™ (Hydroxy-Apetite coated GenX) stent in de novo native coronary artery lesions. This study will provide the longest follow-up experience available. This is a randomized, double blind study conducted at three sites, two sites in India and one in The Netherlands. To be eligible, a patient will be required to have a de novo stenotic lesion of a length that could be covered by a single stent in a native coronary artery of diameter 3.0mm and 3.5mm. A total of at least 60 patients and a maximum of 70 patients will be treated with Vesta™ & VestaCOR™ stent. These patients will be randomized to either a smooth surface nanofilm coated stent (= VestaCOR™) (approx. 35 patients) or to a porous coated stent (= Vesta™) (approx. 35 patients). All patients will be followed clinically at 30 days, 4 months, 9 months, 1, 2, 3, 4 and 5 years.

Patients with a known history of diabetes mellitus and no prior documented evidence of cardiovascular disease will be evaluated for inclusion in the study. Once qualified, patients will be enrolled and be randomized to either the Control Arm or to the Asymptomatic Screening Arm. Patients in the Control Arm will be followed by their primary care physicians with the recommendation that they follow standard guidelines for management of diabetic patients. Patients in the Asymptomatic Screening Arm will undergo CT screening for either coronary calcium scoring or multi-slice CT angiography as well as be placed on one of two medical regimens. Patients will be followed by telephone at six-month intervals for a minimum of one year for both primary and secondary outcomes.

MRI has the ability to visualize the arterial vessel wall. Wall thickening and atherosclerotic plaque components can be visualized in the carotid arteries and the aorta. Previous studies also demonstrated the ability of MRI to visualize the coronary vessel wall. The ultimate goal of coronary vessel wall imaging is to detect vulnerable atherosclerotic plaque thereby. This might prevent complications, e.g., chest pain (angina) or myocardial infarction. The goal of this study was to validate MRI of the coronary vessel wall by comparing it to intravascular ultrasound (IVUS), to detect atherosclerotic plaque in the coronary vessel wall and to look at the uptake of the albumin-binding contrast agent gadofosveset in atherosclerotic plaques. The main hypothesis is that due to the albumin binding characteristics, uptake of the contrast agent will take place in the more vulnerable plaques compared to less vulnerable plaques. MRI will be compared to X-ray coronary angiography and intravascular ultrasound, two techniques currently considered as the standard of reference for imaging of the coronary arteries and vessel wall.

Vulnerable plaque characterized by thin fibrous cap and large lipid core is an independent risk factor for most of acute cardiac event. Current clinical data showed that thin-cap fibroatheroma was more frequently observed in patients with ACS than SAP. Further OCT study indicated that patients with ACS had significantly higher incidence of incomplete neointimal coverage and malapposition after DES implantation than those with SAP. These findings imply that initial native lesion characteristics may be related to different vessel response (neointimal coverage and malapposition) after stenting. However, there is little data on the relationship between plaque characteristics and vascular response to DES after stent implantation evaluated by OCT. Therefore, this study was designed to investigate the relationship between initial plaque characteristics and stent surface coverage or late malapposition after SES implantation. The investigators will use high resolution OCT to assess the initial culprit plaque morphology and subsequent vascular response after SES stenting at the time points of post-stenting, 6 months and 12 months. IVUS will also be performed to evaluate the tissue protrusion, malapposition, vessel remodeling at the same time points.