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Active clinical trials for "Heart and Blood Diseases"

Results 52671-52680 of 52710

An Integrative-"Omics" Study of Cardiomyopathy Patients for Diagnosis and Prognosis in China

Dilated CardiomyopathyHypertrophic Cardiomyopathy3 more

This is a multi-omics research of Chinese cardiomyopathies patients, aiming to determine genetic risk factor and serial biomarkers of cardiomyopathies in diagnosis and prognosis.

Unknown status11 enrollment criteria

Multi-centre Observational Registry on Patients With Implantable Devices Remotely Monitored

DefibrillatorsImplantable3 more

Multicentric, observational, retrospective registry including patients underwent implantable device implantation (pacemaker or ICD) for any indication in the period from 2009 to 2016, followed by remote monitoring. The aims of the registry are to evaluate the occurrence of atrial arrhythmias, of hospitalizations, and the mortality during a long-term follow-up.

Unknown status4 enrollment criteria

Measurement of Antibodies in Adults With a History of Kawasaki Disease

Kawasaki Disease

Kawasaki disease (KD) is an acute systemic vasculitic syndrome with coronary tropism. It has been reported worldwide, but it is ten times more common in Asian population. It is the second vasculitis of the child by its frequency after rheumatoid purpura. It occurs in 80% of cases between 1 and 5 years, with a maximal incidence around the age of 12 months. KD is not well understood and the cause is yet unknown. It may be an autoimmune disorder. The problem affects the mucous membranes, lymph nodes, walls of the blood vessels, and the heart.The clinical picture of KD associate a persistent fever and an antipyretics resistance with mucocutaneous signs and bulky cervical lymphadenopathy usually unilateral. There is currently no vaccine available against Kawasaki disease so it is extremely important to be able to recognize symptoms before they set in and become too severe. Chagas disease (CD) is caused by the parasite Trypanosoma cruzi. Acute CD occurs immediately after infection, may last up to a few weeks or months. Infection may be mild or asymptomatic. There may be fever or swelling around the site of inoculation, and acute infection may result in severe inflammation of the heart muscle. The notion that the pathology of CD has an autoimmune component was initially based on the finding of circulating antibodies binding heart tissue antigens in patients chronically infected with T. cruzi. A recent study reports a possible antigen (non-cruzi-related antibody NCRA) mimicry characterized by a serological reactivity to a well-defined T. cruzi antigen in blood samples from individuals not exposed to the parasite. The measured seroprevalence of such cross-reactivity is in favor of a highly prevalent immunogen acquired in childhood. There are similarities in mechanism of CD and KD: it could be interesting to explore the presence of NCRA in blood samples from adults with a history of KD. The objective of the study is the measurement of the biomarker NCRA in serum in adults with a history of KD compare to a control population. This measurement and the prevalence may permit to associate the NCRA to a possible pathogenic agent.

Unknown status19 enrollment criteria

Study of the Prevalence of Fabry Disease in French Dialysis Patients

Fabry DiseaseEnd Stage Renal Disease1 more

Fabry Disease (FD) is a rare genetic lysosomal storage disease including an X-linked mutation and characterized by an alpha-galactosidase A (GLA) deficiency. It causes globotriaosylceramide (GB3) accumulation within blood vessels, tissues and organs. This accumulation leads to multisystemic deficiency, such as progressive kidney insufficiency. Due to its low prevalence and non-specific symptoms, FD is under-diagnosed. Its estimated incidence is ranged from 1/40,000 to 1/120,000 live births. A review of the international literature suggests a higher prevalence among dialysis patients. Its diagnosis could lead to an enzyme replacement therapy, in order to avoid the occurrence or aggravation of other organs irreversible lesions, and to enhance the familial screening. We aim to conduct a multicentric cross-sectional prevalence study in 5 areas (Rhône-Alpes-Auvergne, Ile de France, Aquitaine, Picardie and department of Gard), involving biologic collection and genetic diagnosis test. Our objective is to measure the prevalence of FD among dialysis patients. Eligible patients will be included after signing the informed consent. In the five participating areas, all of the dialysis centers will be asked for involvement. Nominative data of the French renal epidemiology and information network (REIN) registry will enable first patients screening for eligibility among prevalent dialysis patients. If needed (insufficient or absent data in the REIN registry), data will be completed with medical files. A blood drop will be collected during a hemodialysis session (or the monthly test for peritoneal dialysis treated patients) and deposited on an anonymized blotting paper. For the diagnosis of FD, men will have a measure of the alpha-galactosidase activity, whereas screening in women will be established on the association of alpha-galactosidase activity and lyso-GB3 analysis. If results are compatible with FD, genetic mutation will be search in order to confirm the diagnosis for women, and, for all, to offer familial testing. Results will be transmitted to the nephrologist within the next 2 to 9 weeks. Patients diagnosed with FD will be managed in accordance with the guidelines of the French National Authority for Health (F.N.A.H.).

Unknown status16 enrollment criteria

Characterization of Pseudoxanthoma Elasticum

Pseudoxanthoma Elasticum

Pseudoxanthoma elasticum (PXE) is a rare multisystem disorder of autosomal recessive inheritance (OMIM# 264800) and an estimated prevalence between 1:25.000 and 1:100.000. PXE is characterized by calcification and fragmentation of connective tissue rich in elastic fibers. Due to its high content of elastic fibers, Bruch Membrane in eyes of patients affected by PXE becomes thickened and calcified. The ocular phenotype is characterized by angioid streaks and peau d'orange but also choroidal neovascularizations and chorioretinal atrophy thereby in part mimicking the phenotype of age-related macular degeneration. The disease is due to mutations of the ABCC6-gene coding for a transmembrane protein which is mainly expressed in the liver and kidney. It is hypothesized that ABCC6 is involved in the excretion of a yet unknown factor from the liver which inhibits systemic calcification. In animal models several candidates for this factor have been identified but direct evidence for such a factor in patients with PXE is still missing. The primary purpose of this study is to further investigate the ocular phenotype of patients with PXE using multimodal imaging and functional testing to delineate the impact of Bruch membrane pathology on the eye. Furthermore, possible systemic anti-calcification factors, as well as associations with the vascular alterations are investigated to gain more insights into the pathogenesis of PXE..

Unknown status1 enrollment criteria

Registry for Pulmonary Hypertension Due to Left Heart Disease in China

Pulmonary Hypertension Due to Left Heart Disease

Left heart disease is the main cause of pulmonary hypertension. With the advent of the aging society, chronic heart failure has become a global public health problem. Therefore the prevalence of pulmonary hypertension due to the left heart disease is increasing. However, there is no research on the prevalence of pulmonary hypertension due to the left heart disease in China. Therefore, the aim of the present study was to describe real-world outcome of Chinese patients with pulmonary hypertension due to the left heart disease and identify factors that may predict outcome. Our study will profile the demographics, clinical course, treatments, and outcomes of pulmonary hypertension due to the left heart disease in China.

Unknown status7 enrollment criteria

Mi-RNAs and Specificity of Hs-TnT in Symptomatic ED Patients

Coronary Artery DiseaseMyocardial Infarction

Biomarkers play a key role in the diagnostic workup of patients presenting to an emergency department (ED). European and American guidelines recommend cardiac Troponin (T or I) as the biomarker gold standard for the diagnosis of non-ST-elevation myocardial infarction (non-STEMI). Today, high-sensitivitiy assays are available and allow an early diagnosis of non-STEMI and the detection of troponin in individuals that would have been classified as unstable angina with former assays. As many patients are detected with elevated troponin values with the high sensitivity assays, specificity for non-STEMI has inevitably decreased. Micro-RNAs (mi-RNA) are new biomarkers with a wide spectrum of detectable conditions that allow specific identification of myocardial infarction. The aim of this study is to develop a biomarker protocol that combines the high sensitivity of cardiac Troponin T and the high specificity of mi-RNA profiles for early and safe identification of non-STEMI in ED patients.

Unknown status7 enrollment criteria

Observation Study of Clinical Manifestation and Outcome in Chinese Patients With Pulmonary Vasculitis...

ANCA-associated VasculitisGranulomatosis With Polyangiitis2 more

The purpose of this study is to observe the clinical manifestation, Lab findings including chest CT scans, pathological findings and outcomes in chinese patients with pulminary vasculitis.

Unknown status8 enrollment criteria

National Egyptian Network Pediatric Stroke and Hemiplegia Registry

Stroke With HemiparesisPerinatal Stroke1 more

Our aim is to establish multi-center national Egyptian database of information about cerebrovascular stroke and hemiplegia in infants and children from 0 to 18 years of age.

Unknown status4 enrollment criteria

Infective Endocarditis in Developing Countries, a Prospective, Observational, Multicentre Study...

Infective Endocarditis

Introduction. Comprehensive data on infective endocarditis in developing countries are scarce. Objectives: Description of the characteristics (clinical and microbiological) and assessment of the outcomes of infective endocarditis in low-income countries. Methods : Prospective, Observational, Multicentre study. Inclusion criteria: patients aged over 1 year fulfilling the modified Duke criteria for infective endocarditis. Exclusion criteria: patient included during a previous infective endocarditis episode. Outcomes measures: Mortality at 6 months follow-up; mortality at 1 month follow-up; access to antibiotic treatment (modalities and duration), hospital length of stay and reason for discharge, and cardiac surgery when indicated. Duration: One year (June 2014- June 2015)

Unknown status2 enrollment criteria
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