View clinical trials related to Heart Diseases.
Filter by:Brief summary: Lipoprotein a (Lp(a)) is an independent risk factor for cardiovascular and cerebrovascular disease. Traditionally, the pathogenic role of Lp(a) has been linked to the atherogenic process given its similarity to low density lipoprotein (LDL), however there is a potential for prothrombotic tendencies given its resemblance to plasminogen. The emerging evidence suggests that the prothrombotic properties of Lp(a) contribute not only to arterial but also to venous thrombosis. Lp(a) has the potential to participate in thrombogenesis via several mechanisms: probable platelet aggregation and activation, increased expression of plasminogen activator inhibitor - 1, and reduced production of plasmin. Prior data suggests that Lp(a), can also modify fibrin clot permeability and its susceptibility to lysis. These observations have potentially important implications in patients with a history of myocardial infarction, stroke and venous thromboembolic disease. The investigators propose to conduct a proof-of-concept study to assess the prothrombotic effects of Lp(a), using both quantitative and qualitative assessment of thrombosis, in particular analysing clot structure and dynamics.
To evaluate the safety and clinical efficacy of left atrial appendage in the prevention of thrombus in patients with valvular heart disease, to improve the product according to clinical conditions, to achieve clinically accurate treatment, and to establish the heart valve, the usefulness and universality of Warfarin's anticoagulant model were verified by the specimen library
A registry study on drug therapy and clinical outcomes in elderly patients with coronary heart disease
Nutrition is capable of altering the cardiovascular health of the general population. However, the ideal food and nutritional interventions for the secondary prevention of cardiovascular brain disease and for cardiac rehabilitation are still far from being defined, given the lack of scientific evidence in this specific population of individuals with atherosclerotic disease. This work aims to demonstrate that an intensive program will improve cardiovascular risk predictor parameters, such as high systolic blood pressure, altered lipid and glucose profile, used in the SMART Risk Score tool. In this 12-week clinical study with two arms running in parallel, individuals referred to a cardiac rehabilitation program will receive either an intensive food and nutrition intervention program with nutrition consultations, in which the adoption of the Mediterranean diet is promoted, with contacts telephone calls, short text messages, consultation support tools, podcasts, free access short videos, culinary medicine sessions and nutrition "workshops", or the standard of care program recommended in the Nutritional Support Protocol of the Cardiac Rehabilitation Program. At the beginning of the study, at 4 weeks, at 8 weeks and at 12 weeks, blood and urine samples will be collected, body composition, blood pressure, adherence to the Mediterranean dietary pattern will be assessed, by applying the PREDIMED questionnaire and the dietary intake of 24h previous. The quality of life of individuals will be assessed by the EQ-5D-5L questionnaire at the beginning and at the end of the study. It is expected that the increased intensity and support from the intensive program will have a significant impact on the various metabolic and inflammatory markers predictive of cardiovascular risk and that these observed changes will result in a decreased 10-year risk of developing acute myocardial infarction, stroke or vascular death. On the other hand, the intervention is intended to improve quality of life, improve weight control and assess the impact it has on adherence to the Mediterranean dietary pattern.
Congenital heart diseases (CHD) are structural or functional heart diseases that present at birth even if it is discovered later in life . Congenital heart disease is caused by disturbance in the normal development of the heart especially during the first 6 weeks of pregnancy. Researchers aren't sure about the exact cause , but they think genetics , certain medical conditions , some medications and environmental factors, such as smoking, may play a role . CHD in many cases may be asymptomatic and discovered accidently during the routine examination or may be presented by some clinical manifestations (e.g. Cyanosis or Murmers) and /or complications (e.g. Heart Failure Manifestations : Tachycardia , Tachypnea , Dyspnea during feeding , Diaphoresis especially during feeding ,Restlessness, irritability , Hepatomegaly , and Failure To Thrive) . Recently diagnosis of congenital heart disease is better by using advanced technology e.g. echocardiography, magnetic resonance imaging (MRI), cardiac catheterization, angiography, and radio-active isotopes . and early diagnosis is very important as regard the manangement of the disease . As medical care and surgical interventions have advanced over time, the treatment of many abnormalities is now available . and many infants and children with congenital heart defects are living longer and healthier lives. Many are living into adulthood, requiring ongoing, lifelong medical care for their conditions . So information about different aspects of CHD is very important for planning health programs for long-term care and maintenance for these cases .
The prevalence of hypertension is high, estimated at 80% in patients with cardiovascular (CV) disease. The optimal blood pressure (BP) level for CV prevention remains controversial. Data from the literature highlight that the relationship between BP level and mortality is not linear, but rather J-shaped. In particular, in treated hypertensive patients with stable coronary artery disease, a systolic BP below 120 mm Hg is associated with the risk of recurrent coronary events and CV mortality. An inverse relationship was recently demonstrated between BP level before revascularization procedure and mortality at 3 months and 1 year after the procedure in patients managed for critical ischemia. These data underline the need for a personalized approach to the management of hypertension, especially in elderly hypertensive patients with comorbidities. The question of the optimal mean BP value also arises in cardiac surgery, especially during extracorporeal circulation in patients undergoing coronary artery bypass grafting. Hypotension during cardiac surgery appears to be associated with renal failure and perioperative mortality in some patients. Conversely, high blood pressure levels (above the cerebral autoregulatory threshold) may be associated with postoperative cognitive impairment and bleeding risk. In hypertensive patients, the autoregulatory capacity of cerebral and renal perfusion is partly impaired, with a greater susceptibility to ischemia in case of hypotension. Personalized blood pressure targets could be beneficial perioperatively with a lower risk of postoperative complications. The objective of this protocol is to determine a correlation between perioperative mean arterial pressure level and in-hospital morbidity in a population of patients with ischemic heart disease managed for coronary artery bypass grafting (CABG). The results of this descriptive work would make it possible to introduce the problem of the optimal blood pressure target during extracorporeal circulation according to the existence of peripheral arterial damage and preoperative blood pressure values.
Congenital heart defects (CHDs) are a heterogeneous group of rare diseases of varying severity, each diagnosis with its unique set of co-morbidities. In addition to the heterogeneity, perhaps the greatest challenge to conducting comparative effectiveness research in CHD patients are the poor rates of successful transition from pediatric to adult centered cardiology care and high rates of gaps in recommend care for adults with CHD. This study will use PCORnet to examine the effects of gaps in recommended care (cardiology visits) on patient prioritized outcomes for adults with non-complex and complex subtypes of CHD. This system will be established through 14 (12 recruiting) PCORnet affiliated institutions and linkage to the Congenital Heart Initiative registry (https://chi.eurekaplatform.org), the first patient powered registry for adults with CHD. This registry launched in December 2020, and is IRB approved at Children's National Hospital (IRB# Pro00014697). Funded by PCORI, this project will recruit patients at the 12 PCORnet affiliated institutions and will invite them to contribute their health records data and then join the established Congenital Heart Initiative. By enrolling patients and linking their PCORnet (health record) data into an existing adult congenital heart disease (ACHD) specific registry, future interventions to reduce gaps in care based on study findings can be rapidly implemented in real-world settings through the strong partnerships established with key CHD stakeholders.
This study focuses on patients with incomplete revascularization combined with renal insufficiency. And since heart and kidney are two organs influence each other, the study take the mechanism of heart and kidney comorbidity and the risk factors of the two organs.As one of the traditional Chinese sports, Tai Chi is an aerobic exercise combineing movements with static postures, which can significantly improve the aerobic endurance of patients with coronary heart disease. In this study, a parallel, randomized controlled study method is used to quantitatively evaluate the myocardial ischemia condition by myocardial perfusion imaging indicators. This study aims to figure out whether the cardiac rehabilitation training program based on Tai Chi has a positive effect on the patients' myocardial ischemic.
Heart failure with preserved ejection fraction (HFpEF) is a common and growing condition with a poor prognosis but the pathophysiology and management are still being investigated. The PREFER-CMR project aims to evaluate and validate the application of novel 4D cardiac magnetic resonance flow dynamic methods to measure left ventricular pressures and validate these measurements with direct pressure measurement by coronary angiography. This is a prospective observational study of patients with HFpEF undergoing clinical evaluation with coronary angiography who will also undergo contemporaneous cardiac MRI. The primary outcome will be the level of agreement between the two methods using angiography as the reference method.
Thyroid hormone is critical for normal neurocognitive development in young infants, and even transient hypothyroidism can cause adverse neurodevelopmental outcomes. In a population of infants with CHD who already bear a high risk of long-term developmental delay, detection of hypothyroidism, even of a transient nature, may be even more consequential, and routine periodic monitoring of thyroid function may be necessary to reduce the risk of neurodevelopmental disabilities