View clinical trials related to Cardiovascular Disease.
Filter by:Cardiovascular disease is the leading cause of death in the United States. Other studies have shown that stress, early in life, could be a risk factor for cardiovascular disease, later in life. This study will look at the effect of early life stressors on your cardiovascular health.
The aim of Prevent CardioKids is to evaluate to what extend disturbed vascular function markers are already present in children of different weight categories and whether these are age dependent. Also differences - and relationships - between vascular function measurements and plasma biomarkers between lean and overweight/obese children will be compared.
The availability of data on plasma 25-Hydroxyvitamin D (25(OH)D) concentrations in the last two rounds of the National Health and Nutrition Examination Survey (NHANES) has generated a high level of interest in the consequences of 25(OH)D deficiency and in particular its potential impact on black Americans. Fundamental new questions about the biology of vitamin D have now come to the fore. Are low 25(OH)D-intact parathyroid hormone (iPTH) levels a physiologic "abnormality" in African Americans or does the 25(OH)D-iPTH system have sufficient plasticity to adapt to low sunlight exposure? Could the low 25(OH)D levels which result from the "gene- environment discordance" observed in dark skinned populations in the US be a risk factor for metabolic disorders? Ultimately, the public health community and regulatory bodies must offer recommendations for optimal levels and supplementation. The investigators propose to utilize cohorts from an ongoing NIH-funded study designed to identify determinants of weight change and cardiovascular disease risk in five Afro-origin populations [Modeling the Epidemiologic Transition Study (METS)] to examine these questions. The five METS countries include Ghana, Seychelles, South Africa, Jamaica and the US; the five populations differ greatly in terms of sun exposure and dietary intakes. In addition to the extensive energy expenditure, dietary intake and obesity-related metabolic markers being measured in METS, the investigators propose to assess plasma 25(OH)D, iPTH, serum and urinary calcium, plasma markers of bone resorption and formation, and quantitative ultrasound of the calcaneus. The associations of adiposity, weight change, cardiovascular disease (CVD) risk factors such as blood pressure and insulin, and bone strength with 25(OH)D and iPTH will be assessed. The proposed study will provide a comprehensive assessment of the distribution and determinants of 25(OH)D-iPTH and related physiologic measures across a wide range of latitude and lifestyles. These data should contribute substantially to the understanding of the "normal" range within which these hormones function and their significance in Afro- origin populations.
Heart disease and stroke are the number one killers world-wide. When someone has hypertension, the constantly elevated blood pressure damages their blood vessels and the organs that they supply blood to. This causes stroke, heart attack, heart failure, kidney failure and dementia. Finding and lowering high blood pressure to normal with lifestyle changes and if necessary medications, lowers the risk of these outcomes. Canada has high rates of blood pressure control compared to other countries in the world, due in large part to the successful dissemination of hypertension guidelines. However remote and disadvantaged communities have not been as successful and need additional measures to help achieve the same level of blood pressure control as the rest of the country. The DREAM-GLOBAL team has extensive experience working with Canada's Aboriginal Communities and a large community in Tanzania. The DREAM-GLOBAL project will integrate innovations in technology with the implementation of guidelines-based blood pressure control and through partnerships with experts in government and industry, overcome barriers to lowering blood pressure in Canada's Aboriginal Communities, and in a community in Tanzania. Tools will be developed and tested that will close the circle of care around people with hypertension by bringing measurement data to the medical record and health care provider and also sending useful medical feedback to the person with hypertension via secure data servers and routine SMS messaging on cell phones. The system will be tested for effectiveness of diagnosing and also for managing hypertension. To begin the process of preventing hypertension, the team will also explore with an Aboriginal community how to create policies to reduce the sodium content in their food. If proven effective, DREAM-GLOBAL can also become a platform for managing other chronic diseases.
The primary goal of this Multicenter Study is to develop and to evaluate a method for measuring donor-specific cell free DNA in blood samples from transplant recipients as markers of rejection. Blood samples obtained periodically from heart transplant recipients are assessed for cell free DNA relative to clinical data in order to determine whether changes in the level of cell free DNA indicate rejection. This research study proposes testing a blood sample obtained from the heart transplant recipient. The research seeks to establish whether this blood test will show when the patient is beginning to or already rejecting the transplanted heart. BACKGROUND Identifying if a transplant patient is beginning to or already rejecting the heart is necessary, so that appropriate treatment can be started to halt the rejection. Heart catheterization with biopsy is the usual method used for assessing whether a patient may be rejecting the heart. There are also a number of other methods that transplant physicians will use to look for signs of rejection including other blood tests, echocardiograms, obtaining pressure readings during heart catheterization, and micro-array testing of blood obtained during biopsy. These technologies are limited in ability to consistently and accurately identify the presence of rejection. The usual method of checking for rejection involves obtaining a sample of the heart tissue (heart biopsy); biopsy can only be accomplished through heart catheterization which is an invasive procedure that has risks associated with disturbing the heart such as puncturing the heart or causing the heart rate to change or damaging tissue in the heart. Overtime, repeating this invasive procedure can diminish the ease of the procedure because the veins can become scarred and more difficult to access. For these reasons, researchers believe that it would be good to have a blood test that gives information about the possibility of rejection so that it may not be necessary to do as many heart biopsies. Also, a blood test may be able to provide information about the heart or about rejection that is currently not available at all.
Pathological and clinical studies have consistently demonstrated that abnormalities in thrombosis and hemostasis play a major role in the pathogenesis of atherosclerosis and atherothrombosis. Screening for abnormalities in thrombosis and hemostasis by measuring platelet activity, thrombin generation, and markers of coagulation have been proposed to identify individuals at high-risk for cardiovascular events, however, it remains a research tool not ready for implementation in standard care. The proposed study will add to the growing understanding of platelet activity and markers of coagulation in cardiovascular disease; examine a comprehensive battery of platelet activity markers, thrombin generation, markers of coagulation, and inflammatory biomarkers in subjects undergoing vascular surgery; and will provide important data on the mechanism of increased platelet activity using micro RNA, RNA and DNA expression profiling. The study design is prospective and the main outcome measures are platelet activity, coagulation markers and incident cardiovascular and bleeding events.
The objective of this study is to determine whether a community-based salt reduction program can reduce average salt consumption levels. Baseline levels of salt consumption were measured in 2011, the salt reduction program was then implemented, and now in 2014 investigators are remeasuring salt consumption levels in the community. The hypothesis investigators are testing is that the salt reduction program will have led to a change in salt consumption levels between 2011 and 2014. The study is being done in Lithgow, a regional town in New South Wales , Australia.
The aim of this study is the comparison between the effects of supplementation with omega 3 or placebo for 8 weeks in serum level of IGF-1 and IGFBP-3 and gene expression of IGF-1 in patients with cardiovascular disease.
Evaluation of the metabolic and physiological characteristics of patients with diagnosed Cardiovascular Disease following administration of the Cardiovascular vitamin, CardioLife.
The objective was to compare the frequency and intensity of symptoms of anxiety in patients of preoperative cardiac surgery who received empathic behaviour from nurse or family or those who received no specific type of empathic behaviour. This is a randomized clinical trial. The sample consisted of 66 patients in preoperative of cardiac surgery, who were divided in three groups: empathic behaviour by nurses, without specific empathic behaviour and by family. Anxiety was assessed at two time points: before and after the intervention. The instrument used was developed and validated, comprising 19 defining characteristics of the nursing diagnosis anxiety. The hypothesis is that the group who received empathic behaviour from nurse or family will reduce the anxiety.