View clinical trials related to Coronary Artery Disease.
Filter by:The purpose of this study is to evaluate the prevalence and morphological features of coronary plaques by means of OCT in patients with acute myocardial infarction but without any significant coronary stenosis at coronary angiography. In addition, cardiac magnetic resonance imaging (CMR) will be performed to assess the prevalence, location, and pattern of myocardial injury as well as other concomitant findings. As a secondary analysis, the association between the distribution and characteristics of coronary plaques detected on OCT and myocardial injury shown by CMR will be evaluated. In addition, a post-hoc survey regarding the potential modification of the interventional treatment approach based on OCT analysis will be conducted.
Background: Non-alcoholic fatty liver disease (NAFLD) is the hepatic manifestation of the metabolic syndrome, which is one of the major risk factors of coronary heart disease (CHD). CHD is the most important manifestation of atherosclerosis, because of its immense morbidity and mortality. Transient elastography (TE, Fibroscan®) including the currently developed controlled attenuation parameter (CAP) is a non-invasive method for evaluation of liver fibrosis and steatosis, which is already implemented in routine care of patients with NAFLD. Hypothesis: The use of TE with CAP as screening for NAFLD might be an easy tool for risk assessment for CHD. Methods: Patients scheduled for routine coronary angiography will be screened for manifestation of NAFLD by TE including CAP, conventional ultrasound, clinical and laboratory parameters. Patients will be stratified for the presence of CHD based on the angiography results and correlation analysis with liver fat content will be performed. NFALD screening will be validated in a subgroup by MR-based measurements.
The purpose of this study is to perform a first-in-man assessment of feasibility, exploratory efficacy and clinical performance of the novel Angiolite drug-eluting stent (iVascular, Barcelona, Spain) utilizing intracoronary optical coherence tomography (OCT).
Investigators are planning a single center pilot randomized controlled trial to assess the potential of a Cytoadsorbant filter (Cytosorb®, Germany) to remove cytokines from the blood during cardiac surgery. Investigators will screen all patients undergoing cardiac surgery and approach those deemed at risk of post surgical complications [≥ 1 among: age >75 years old, double valvular replacement, complex surgery with expected CPB time >100 min, redo cardiac surgery, pre-op chronic renal failure (plasma creatinine level >120 mcmol/l) or chronic heart failure (LVEF <35%)]. Patients with end-stage renal disease (dialysis dependence), undergoing an emergency procedure or an off-pump procedure, those who decline informed consent as well as those enrolled in another conflicting study will be excluded. Eligible patients will be approached, consented and enrolled in the trial. Patients will then be randomized to either receive conventional CPB (control arm) or CPB plus Cytosorb (intervention arm). The target population is 30 patients (15 per arm). For this pilot study, investigators main outcome will be differences between the two arms in measurement of serum levels for IL-2, IL-6, IL-10 and TNF alpha at baseline (pre-operatively), on ICU admission, as well as 6 and 24 hrs post CPB. Secondary outcomes will be changes in coagulation factors serum levels, the need for vasopressors, inotropes, mechanical ventilation and renal replacement therapy, ICU and hospital length of stay as well as in-hospital mortality. Recruitment period should span from May 2016 to April 2017.
This is a 9-months extension to the following study, protocol number: 003-03: "A study to evaluate the use of SOMVC001 (GALA) vascular conduit preservation solution in patients undergoing coronary artery bypass grafting (GABG)". Participation is allowed exclusively to participants enrolled in the main protocol SOMVC001 (GALA).
The proposed study is to validate a non-invasive imaging technique to evaluate the myocardial perfusion reserve in comparison with a validated invasive technique, the measure of coronary flow reserve (CRF) with thermodilution.
The overall goal of the study is to test the effectiveness and sustainability of an integrated care model for managing cardiovascular risk in individuals with family history of premature coronary heart disease (CHD). This care model involves: 1. screening for cardiovascular risk factors, 2. providing lifestyle interventions for prevention and management of cardiovascular risk factors, 3. providing a framework for linkage to appropriate primary health care facility and 4. active follow-up of intervention adherence. Initially, a formative qualitative research component will gather information on understanding of diseases, barriers to care, specific components of the intervention package (for example, context specific ways to enhance physical activity and to reduce prolonged sitting time, ways to improve diet etc.) and feedback on the intervention strategies (lifestyle education, care and linkage coordination). Then a randomized controlled trial involving ~700 families and 1400 participants will be used to determine whether an integrated care model is effective in reducing or halting the progression of CHD risk factors and risk factor clustering in families. The sustainability and scalability of this intervention will be assessed through economic and qualitative lenses to estimate value and acceptability. Scalability will be informed by cost-effectiveness and acceptability of the integrated cardiovascular risk reduction approach.
Specific aim 1a will test the hypothesis that diabetic patients with 2-2 haptoglobin genotype have higher indices of postoperative myocardial injury (creatine kinase MB isoenzyme , Troponin I ) and renal injury (as indicated by elevated creatinine, cytostatin C and glomerular filtration rate). Of note, significantly elevated levels (>5 times the upper normal limit) of creatine kinase MB isoenzyme and troponins postoperatively have been associated with postoperative myocardial ischemia/infarction and are a predictor of short-term and long-term mortality after cardiac surgery. Specific aim 1b will evaluate preoperative and postoperative indices of oxidative stress (such as isoprostane f2 alpha and malondialdehyde) and will evaluate whether patients with type 2-2 haptoglobin express increased oxidative stress. The investigators will also try to correlate whether patients with increased oxidative stress are those with elevated indices of myocardial and/or renal injury Specific aim 1c will try to evaluate whether patients with type 2-2 haptoglobin also have increased levels of inflammatory indices (C-reactive protein,[interleukin] IL-1, IL-2, IL-6, TNF[tumor necrosis factor]) and try to correlate the findings with postoperative myocardial and or renal injury. The incidence of atrial fibrillation after coronary artery bypass graft ranges from 19% to 27%. The investigators will also look at any correlation of the type 2-2 haptoglobin and the incidence of post-operative atrial fibrillation.
In this observational study investigators examine the presence of circulatory oscillations in blood pressure, heart rate, and doppler laser flow before and after planned cardiac surgery.
Coronary revascularization improves survival for patients with coronary artery disease. However,many patients are left with poor physical and mental health. Traditional cardiac rehabilitation involves moderate intensity continuous exercise (MICE). Alternatives to traditional cardiac rehabilitation programming may however provide superior understudied benefits to patients with poor physical and mental health. Nordic walking (NW) and high-intensity interval training (HIIT) are two examples of alternative programs for cardiac rehabilitation, which may provide superior physical and mental health benefits when compared to traditional MICE. The main purpose of this project is, therefore, to determine the short and long term physical and mental health benefits of alternative cardiac rehabilitation modalities, including NW and HIIT on exercise capacity, quality of life and depression after a 12-week program.